User:AdamBMorgan/LCC Proposal
This is a breakdown of the Library of Congress Classification (LCC) system as it could apply to Wikisource's Portal: namespace.
Applying the LCC to the portals will make the namespace easier to browse and navigate. Using LCC rather than a custom system gives Wikisource an established and respectable classification system. Using LCC rather than the Dewey Decimal System will be easier as Dewey is more complex.
The LCC system does need to be adapted a little to fit Wikisource but I've tried to explain that in the notes below. A method (or methods) of navigation will need to be decided as well.
Why?[edit]
The subject came up in the Scriptorium, under the heading More about Author: namespace vs Portal: namespace. Specifically, this point...
We provide searchable content, if we need a subject index to that we should adopt a published and authoritative one. cygnis insignis 06:30, 16 August 2010 (UTC)
...and this one...
What about Library of Congress Classification? No copyright issues there. Also, I don't think we should create 900 unused portals, nor limit ourselves to integer-level portals (if DD is used): there will always be some portals with far more material than others, so creating and dividing should be done as needed. —Spangineerwp (háblame) 15:54, 16 August 2010 (UTC)
Finally leading to my proposal (including Dewey and others) under the heading Structure Portals by Dewey Decimal or Library of Congress Classification. Hopefully, this page explains in more detail how this could work.
General Notes[edit]
- The LCC system uses three letters followed by a number (which can then be followed by a further Cutter Number)
- The first letter is the Class.
- The second letter is the Subclass.
- I don't know the correct term for the third letter so I'm calling it "Subclass 2" on this page. (Formerly "Sub-sub-class")
- The number may not be necessary for Wikisource so I am ignoring it for the moment.
- The Cutter Number is too much detail for Wikisource so it will be left out.
- An additional portal (Portal:Index, Portal:Contents, Portal:Portals or similar) should sit above this system - just linking to the 21 Class portals.
- One of the unused examples could list all of the portals, broken down by class and subclass.
- Portal:Index (or whatever) can just be a table of links.
- Each Class portal (eg. Portal:General Works) can either be a normal Wikisource portal or a table of links to Subclass portals.
- The full list of red links below need not be used. Apart from the Index and the Classes, the rest can remain as red links until they are needed.
- It would only take about thirty new portals to organise the Portal: namespace as it stands at the moment. More can be added later as and when required.
- As this is the English Wikisource, we probably won't really need all of the language and literature portals for a start.
- Existing or future portals can either,
- Sit beneath the subclass portals (eg. Portal:Journals is an existing portal which should be a child of Portal:English Literature, based on Subclass PR - English literature).
- Count as the subclass portals (eg. Portal:Collective works is an existing portal and subclass of Class A).
- I've used title capitalisation (eg. "Portal:Law of the Sea") in this list but sentence capitalisation might be prefered (eg. "Portal:Law of the sea").
- There is little or no difference between subclasses 1 and subclasses 2 but I have separated them into different columns for the table to make differentiating them easier. They are not necessarily in a parent-child relationship; the official LCC system has "Subclass DA - Great Britain" and "Subclass DAW - Central Europe."
Notes on adapting to Wikisource[edit]
Initially I attempted to just use the existing classification name as a portal. However, the LCC names do not match well to names used in Wikisource. Some names could be easily adapted, for example "Subclass GV - Recreation. Leisure" easily becomes "Portal:Recreation and Leisure." However, other LCC names are more of a list, the most extreme of which is "Subclass PT - German literature - Dutch literature - Flemish literature since 1830 - Afrikaans literature -Scandinavian literature - Old Norse literature: Old Icelandic and Old Norwegian - Modern Icelandic literature - Faroese literature - Danish literature - Norwegian literature - Swedish literature." In these cases I have added subclasses (in the Subclass 2 coumn) to the orignal subclass to accomodate each item in the list. All subclasses that I have added myself are shown in green in the list.
This is justified as an existing practice when adapting the LCC system to local or specific use. Wikipedia notes that "The National Library of Medicine classification system (NLM) uses the classification scheme's unused letters W and QS–QZ. Some libraries use NLM in conjunction with LCC, eschewing LCC's R (Medicine). Others prefer to use the LCC scheme's QP-QR schedules and include Medicine R."
NB: I have taken the first element (which would be "German literature" in the example above) as the existing subclass (PT above) and created subclasses for everything else (for example, "Dutch literature" becomes PTA, "Flemish literature" becomes PTB, and so forth). This seems to be the method used by LCC where secondary subclasses (the third letter) already exist and it prevents having unnecessary 'junction' portals that just link to the others. On the other hand, it does give the impression that the additional subclasses are child-portals of the first subclass (ie. the "Dutch literature" is a child of "German literature"). They can all become "child" subclasses of a junction portal if this is a problem.
Notes on Class K - Law[edit]
The subclasses of Class K (Law) have been omitted from the following list for the time being. Class K is very detailed and makes more use of the third classification letter than any other class (under the pre-existing system). Largely, there is a classification for each individual country's legal system as well as some extras.
For reference, the full classificaton can be read elsewhere on Wikisource, on Wikipedia and by following a link on the official Library of Congress Classification Outline webpage.
As an example, here is the list for Canadian Law and a few other bits:-
| Original LCC Classification | Class | Subclass 1 | Subclass 2 | Portal | Sub-Portal |
|---|---|---|---|---|---|
| Class K - Law - Portal:Law | |||||
| Subclass KE - Canada (general) | K | E | Portal:Law of Canada | ||
| Subclass KEA - Alberta | K | E | A | Portal:Law of Alberta | |
| Subclass KEB - British Columbia | K | E | B | Portal:Law of British Columbia | |
| Subclass KEM - Manitoba | K | E | M | Portal:Law of Manitoba | |
| Subclass KEN - New Brunswick. Newfoundland. Northwest Territories. Nova Scotia | K | E | N | This might require extra subclasses for Wikisource. | |
| Subclass KEO - Ontario | K | E | O | Portal:Law of Alberta | |
| Subclass KEP - Prince Edward Island | K | E | P | Portal:Law of British Columbia | |
| Subclass KEQ - Québec | K | E | Q | Portal:Law of Québec | |
| Subclass KES - Saskatchewan | K | E | S | Portal:Law of Saskatchewan | |
| Subclass KEY - Yukon Territory | K | E | Y | Portal:Law of the Yukon Territory | |
| Subclass KEZ - Cities, towns, etc. | K | E | Z | Not sure how to implement this yet (if at all) | |
| Subclass KWX - Antarctica | K | W | X | Portal:Law of Antarctica | |
| Subclass KZ - Law of Nations. International law | K | Z | Portal:Law of Nations | ||
| Subclass KZA - Law of the sea | K | Z | A | Portal:Law of the Sea | |
| Subclass KZD - Space law. Law of outer space | K | Z | D | Portal:Law of Outer Space | |
Notes on Wikisource-specific Portals[edit]
Some portals, such as Portal:Salvation of Israel Project and Portal:Influential Books (both of which relate to WikiProjects), do not easily fit into this system. This can be solved by created a new class to contain Wikisource-specific portals. The classes I, O, W, X and Y are not used in the LCC system. Again, the National Library of Medicine (NLM) classification system uses W and some unused parts of Q for their own purposes.
| Original LCC Classification | Class | Subclass 1 | Subclass 2 | Portal | Sub-Portal |
|---|---|---|---|---|---|
| Class X - Wikisource - Portal:Wikisource | |||||
| Subclass XA - WikiProjects | X | A | Portal:WikiProjects | ||
| Subclass XB - Something else | X | B | Something else | ||
| Subclass XC - Something else | X | C | Something else | ||
Notes on representation in the header template[edit]
Addition: I have created all the templates needed to implement this. They can be found in Category:Portal classification templates, the most important of which are {{Portal Class}} and {{Portal Parent}}.
The method of navigating the portal structure (as detailed in the list at the end of this page) will need to be chosen. It would help if this is standardised. This will also serve to announce to the reader the classification of the current portal. Additional "sideways" navigation could also help, linking to similar portals without the need to navigate up and then down again. Examples follow:
[edit]
My personal favourite is the third example below (the first template) - or the fifth with both links and a template.
Example with classification links in parent field. Each letter links to a separate parent portal:
Example with full classification names linked in the parent field (see {{Portal Parent}}):
Example with a potential template in the notes section, with a sister link to show that the two templates do not conflict (see {{Portal Class}}):
Example with a very slightly different potential template in the notes section (including an example of using the third letter):
Example of a combination of the above systems for added redundancy:
Example of header tabs. This probably won't fit Wikisource very well but I thought I'd include something as an example anyway:
| A - General Works | AM - Museums |
[edit]
A simple bullet-pointed list of sister portals in a "See Also" section is the simplest way to handle sideways navigation. However, some further templates might help.
If Template:Navbox worked it would be useful here, but it doesn't (I've fiddled with it a bit with no luck so far). Still a navbox, or similar template, for each Class, containing links to all the portals in that class, would be an example of a useful navigation aid.
Navigation between class without having to use the index is also useful.
This is stolen from Wikipedia's Template:Browsebar, although listing all of the LCC classes may be too much. The links are still Wikipedia links at the moment; note that they all link to anchors on one page rather than separate portals:
Wikisource portals: Culture · Geography · Health · History · Mathematics · Natural sciences · People · Philosophy · Religion · Society · Technology
Example of a possible adaptation (using just the letters helps to fit everything on one line but it doesn't make it clear what the letters actually mean to anyone not already familiar with the system):
Wikisource portals: A · B · C · D · E · F · G · H · J · K · L · M · N · P · Q · R · S · T · U · V · Z
List[edit]
This is a full list, apart from Class K (see above), of the classes and subclasses of the LCC system along with their potential equivalent Wikisource portals.
| Key |
|---|
| LCC Classes |
| Existing LCC subclasses |
| Additional non-LCC subclasses |
| Original LCC Classification | Class | Subclass 1 | Subclass 2 | Portal | Sub-Portal |
|---|---|---|---|---|---|
| Class A - General Works - Portal:General Works | |||||
| Subclass AC - Collections. Series. Collected works | A | C | Portal:Collective works | ||
| A | C | A | Portal:Collections | ||
| A | C | B | Portal:Series | ||
| Subclass AE - Encyclopedias | A | E | Portal:Encyclopedias | ||
| Subclass AG - Dictionaries and other general reference works | A | G | Portal:Dictionaries and General Reference | ||
| A | G | A | Portal:Reference Works | ||
| Subclass AI - Indexes | A | I | Portal:Indexes | ||
| Subclass AM - Museums. Collectors and collecting | A | M | Portal:Museums | ||
| A | M | A | Portal:Collectors and Collecting | ||
| Subclass AN - Newspapers | A | N | Portal:Newspapers | ||
| Subclass AP - Periodicals | A | P | Portal:Periodicals | ||
| Subclass AS - Academies and learned societies | A | S | Portal:Academies and learned societies | ||
| Subclass AY - Yearbooks. Almanacs. Directories | A | Y | Portal:Yearbooks | ||
| A | Y | A | Portal:Almanacs | ||
| A | Y | B | Portal:Directories | ||
| Subclass AZ - History of scholarship and learning. The humanities | A | Z | Portal:History of Scholarship and Learning | ||
| A | Z | A | Portal:The Humanities | ||
| Class B - Philosophy, Psychology, Religion - Portal:Philosophy, Psychology and Religion | |||||
| Subclass B - Philosophy (General) | B | — | Portal:Philosophy | ||
| Subclass BC - Logic | B | C | Portal:Logic | ||
| Subclass BD - Speculative philosophy | B | D | Portal:Speculative Philosophy | ||
| Subclass BF - Psychology | B | F | Portal:Psychology | ||
| Subclass BH - Aesthetics | B | H | Portal:Aesthetics | ||
| Subclass BJ - Ethics | B | J | Portal:Ethics | ||
| Subclass BL - Religions. Mythology. Rationalism | B | L | Portal:Religions | ||
| B | L | A | Portal:Mythology | ||
| B | L | B | Portal:Rationalism | ||
| Subclass BM - Judaism | B | M | Portal:Judaism | ||
| Subclass BP - Islam. Bahaism. Theosophy, etc. | B | P | Portal:Islam | ||
| B | P | A | Portal:Bahaism | ||
| B | P | B | Portal:Theosophy | ||
| Subclass BQ - Buddhism | B | Q | Portal:Buddhism | ||
| Subclass BR - Christianity | B | R | Portal:Christianity | ||
| Subclass BS - The Bible | B | S | Portal:The Bible | ||
| Subclass BT - Doctrinal Theology | B | T | Portal:Doctrinal Theology | ||
| Subclass BV - Practical Theology | B | V | Portal:Practical Theology | ||
| Subclass BX - Christian Denominations | B | X | Portal:Christian Denominations | ||
| Class C - Auxiliary Sciences of History (General) - Portal:Sciences of History | |||||
| Subclass CB - History of Civilization | C | B | Portal:History Of Civilization | ||
| Subclass CC - Archaeology | C | C | Portal:Archaeology | ||
| Subclass CD - Diplomatics. Archives. Seals | C | D | Portal:Diplomatics | ||
| C | D | A | Portal:Archives | ||
| C | D | B | Portal:Seals | ||
| Subclass CE - Technical Chronology. Calendar | C | E | Portal:Technical Chronology and Calendar | ||
| Subclass CJ - Numismatics | C | J | Portal:Numismatics | ||
| Subclass CN - Inscriptions. Epigraphy | C | N | Portal:Inscriptions and Epigraphy | ||
| Subclass CR - Heraldry | C | R | Portal:Heraldry | ||
| Subclass CS - Genealogy | C | S | Portal:Genealogy | ||
| Subclass CT - Biography | C | T | Portal:Biography | ||
| Class D - World History (except American History) - Portal:World History | |||||
| Subclass D - History (General) | D | — | Portal:History | ||
| Subclass DA - Great Britain | D | A | Portal:History of Great Britain | ||
| Subclass DAW - Central Europe | D | A | W | Portal:History of Central Europe | |
| Subclass DB - Austria - Liechtenstein - Hungary - Czechoslovakia | D | B | Portal:History of Austria | ||
| D | B | A | Portal:History of Liechtenstein | ||
| D | B | B | Portal:History of Hungary | ||
| D | B | C | Portal:History of Czechoslovakia | ||
| Subclass DC - France - Andorra - Monaco | D | C | Portal:History of France | ||
| D | C | A | Portal:History of Andorra | ||
| D | C | B | Portal:History of Monaco | ||
| Subclass DD - Germany | D | D | Portal:History of Germany | ||
| Subclass DE - Greco-Roman World | D | E | Portal:History of the Greco-Roman World | ||
| Subclass DF - Greece | D | F | Portal:History of Greece | ||
| Subclass DG - Italy - Malta | D | G | Portal:History of Italy | ||
| D | G | A | Portal:History of Malta | ||
| Subclass DH - Low Countries - Benelux Countries | D | H | Portal:History of the Low Countries | ||
| Subclass DJ - Netherlands (Holland) | D | J | Portal:History of the Netherlands | ||
| Subclass DJK - Eastern Europe (General) | D | K | Portal:History of Eastern Europe | ||
| Subclass DK - Russia. Soviet Union. Former Soviet Republics - Poland | D | K | Portal:History of Russia | ||
| D | K | A | Portal:History of the Soviet Union | ||
| D | K | B | Portal:History of the Former Soviet Republics | ||
| D | K | C | Portal:History of Poland | ||
| Subclass DL - Northern Europe. Scandinavia | D | L | Portal:History of Northern Europe | ||
| D | L | A | Portal:History of Scandinavia | ||
| Subclass DP - Spain - Portugal | D | P | Portal:History of Spain | ||
| D | P | A | Portal:History of Portugal | ||
| Subclass DQ - Switzerland | D | Q | Portal:History of Switzerland | ||
| Subclass DR - Balkan Peninsula | D | R | Portal:History of the Balkan Peninsula | ||
| Subclass DS - Asia | D | S | Portal:History of Asia | ||
| Subclass DT - Africa | D | T | Portal:History of Africa | ||
| Subclass DU - Oceania (South Seas) | D | U | Portal:History of Oceania | ||
| Subclass DX - Romanies | D | X | Portal:History of the Romanies | ||
| Class E - American History - Portal:History of the United States | |||||
| Class F - Local History of the United States and British, Dutch, French, and Latin America - Portal:Local American History | |||||
| Class G - Geography, Anthropology, Recreation - Portal:Geography, Anthropology and Recreation | |||||
| Subclass G - Geography (General). Atlases. Maps | G | — | Portal:Geography | ||
| G | — | A | Portal:Atlases and Maps | ||
| Subclass GA - Mathematical geography. Cartography | G | A | Portal:Mathematical Geography | ||
| G | A | A | Portal:Cartography | ||
| Subclass GB - Physical geography | G | B | Portal:Physical Geography | ||
| Subclass GC - Oceanography | G | C | Portal:Oceanography | ||
| Subclass GE - Environmental Sciences | G | E | Portal:Environmental Sciences | ||
| Subclass GF - Human ecology. Anthropogeography | G | F | Portal:Human Ecology | ||
| G | F | A | Portal:Anthropogeography | ||
| Subclass GN - Anthropology | G | N | Portal:Anthropology | ||
| Subclass GR - Folklore | G | R | Portal:Folklore | ||
| Subclass GT - Manners and customs (General) | G | T | Portal:Manners and Customs | ||
| Subclass GV - Recreation. Leisure | G | V | Portal:Recreation and Leisure | ||
| Class H - Social Sciences - Portal:Social Sciences | |||||
| Subclass H - Social sciences (General) | H | — | Portal:Social Sciences (general) | ||
| Subclass HA - Statistics | H | A | Portal:Statistics | ||
| Subclass HB - Economic theory. Demography | H | B | Portal:Economic Theory | ||
| H | B | A | Portal:Demography | ||
| Subclass HC - Economic history and conditions | H | C | Portal:Economic History and Conditions | ||
| Subclass HD - Industries. Land use. Labor | H | D | Portal:Industries | ||
| H | D | A | Portal:Land Use | ||
| H | D | B | Portal:Labor | ||
| Subclass HE - Transportation and communications | H | E | Portal:Transportation and Communications | ||
| Subclass HF - Commerce | H | F | Portal:Commerce | ||
| Subclass HG - Finance | H | G | Portal:Finance | ||
| Subclass HJ - Public finance | H | J | Portal:Public Finance | ||
| Subclass HM - Sociology (General) | H | M | Portal:Sociology | ||
| Subclass HN - Social history and conditions. Social problems. Social reform | H | N | Portal:Social History | ||
| H | N | A | Portal:Social Problems | ||
| H | N | B | Portal:Social Reform | ||
| Subclass HQ - The family. Marriage. Women | H | Q | Portal:The Family | ||
| H | Q | A | Portal:Marriage | ||
| H | Q | B | Portal:Women | ||
| Subclass HS - Societies: secret, benevolent, etc. | H | S | Portal:Societies | ||
| Subclass HT - Communities. Classes. Races | H | T | Portal:Communities | ||
| H | T | A | Portal:Classes | ||
| H | T | B | Portal:Races | ||
| Subclass HV - Social pathology. Social and public welfare. Criminology | H | V | Portal:Social Pathology | ||
| H | V | A | Portal:Social and Public Welfare | ||
| H | V | B | Portal:Criminology | ||
| Subclass HX - Socialism. Communism. Anarchism | H | X | Portal:Socialism | ||
| H | X | A | Portal:Communism | ||
| H | X | B | Portal:Anarchism | ||
| Class J - Political Science - Portal:Political Science | |||||
| Subclass J - General legislative and executive papers | J | — | Portal:General Legislative and Executive Papers | ||
| Subclass JA - Political science (General) | J | A | Portal:Political Science (general) | ||
| Subclass JC - Political theory | J | C | Portal:Political Theory | ||
| Subclass JF - Political institutions and public administration | J | F | Portal:Political Institutions and Public Administration | ||
| Subclass JJ - Political institutions and public administration (North America) | J | J | Portal:Political Institutions and Public Administration of North America | ||
| Subclass JK - Political institutions and public administration (United States) | J | K | Portal:Political Institutions and Public Administration the United States | ||
| Subclass JL - Political institutions and public administration (Canada, Latin America, etc.) | J | L | Portal:Political Institutions and Public Administration of America | ||
| Subclass JN - Political institutions and public administration (Europe) | J | N | Portal:Political Institutions and Public Administration of Europe | ||
| Subclass JQ - Political institutions and public administration (Asia, Africa, Australia, Pacific Area, etc.) | J | Q | Portal:Political Institutions and Public Administration of the World | ||
| Subclass JS - Local government. Municipal government | J | S | Portal:Local Government | ||
| J | S | A | Portal:Municipal Government | ||
| Subclass JV - Colonies and colonization. Emigration and immigration. International migration | J | V | Portal:Colonies and Colonization | ||
| J | V | A | Portal:Emigration and Immigration | ||
| J | V | B | Portal:International Migration | ||
| Subclass JZ - International relations | J | Z | Portal:International Relations | ||
| Class K - Law - Portal:Law | |||||
| Omitted for the moment - see Notes on Class K - Law | |||||
| Class L - Education - Portal:Education | |||||
| Subclass L - Education (General) | L | — | Portal:Education (general) | ||
| Subclass LA - History of education | L | A | Portal:History of Education | ||
| Subclass LB - Theory and practice of education | L | B | Portal:Theory and Practice of Education | ||
| Subclass LC - Special aspects of education | L | C | Portal:Special Aspects of Education | ||
| Subclass LD - Individual institutions - United States | L | D | Portal:Educational Institutions of the United States | ||
| Subclass LE - Individual institutions - America (except United States) | L | E | Portal:Educational Institutions of America | ||
| Subclass LF - Individual institutions - Europe | L | F | Portal:Educational Institutions of Europe | ||
| Subclass LG - Individual institutions - Asia, Africa, Indian Ocean islands, Australia, New Zealand, Pacific islands | L | G | Portal:Educational Institutions of the World | ||
| Subclass LH - College and school magazines and papers | L | H | Portal:College and School Magazines and Papers | ||
| Subclass LJ - Student fraternities and societies, United States | L | J | Portal:Student fraternities and societies | ||
| Subclass LT - Textbooks | L | T | Portal:Textbooks | ||
| Class M - Music - Portal:Music | |||||
| Subclass M - Music | M | — | Portal:Music | ||
| Subclass ML - Literature on music | M | L | Portal:Literature on Music | ||
| Subclass MT - Instruction and study | M | T | Portal:Instruction and Study | ||
| Class N - Fine arts - Portal:Fine arts | |||||
| Subclass N - Visual arts | N | — | Portal:Visual Arts | ||
| Subclass NA - Architecture | N | A | Portal:Architecture | ||
| Subclass NB - Sculpture | N | B | Portal:Sculpture | ||
| Subclass NC - Drawing. Design. Illustration | N | C | Portal:Drawing, Design and Illustration | ||
| Subclass ND - Painting | N | D | Portal:Painting | ||
| Subclass NE - Print media | N | E | Portal:Print Media | ||
| Subclass NK - Decorative arts | N | K | Portal:Decorative Arts | ||
| Subclass NX - Arts in general | N | X | Portal:Arts In General | ||
| Class P - Language and Literature - Portal:Language and Literature | |||||
| Subclass P - Philology. Linguistics | P | — | Portal:Philology and linguistics | ||
| Subclass PA - Greek language and literature. Latin language and literature | P | A | Portal:Greek Language And Literature | ||
| P | A | A | Portal:Latin Language And Literature | ||
| Subclass PB - Modern languages. Celtic languages | P | B | Portal:Modern Languages | ||
| P | B | A | Portal:Celtic Languages | ||
| Subclass PC - Romanic languages | P | C | Portal:Romanic Languages | ||
| Subclass PD - Germanic languages. Scandinavian languages | P | D | Portal:Germanic Languages | ||
| P | D | A | Portal:Scandinavian Languages | ||
| Subclass PE - English language | P | E | Portal:English Language | ||
| Subclass PF - West Germanic languages | P | F | Portal:West Germanic Languages | ||
| Subclass PG - Slavic languages and literatures. Baltic languages. Albanian language | P | G | Portal:Slavic Languages And Literatures | ||
| P | G | A | Portal:Baltic Languages | ||
| P | G | B | Portal:Albanian Language | ||
| Subclass PH - Uralic languages. Basque language | P | H | Portal:Uralic Languages | ||
| P | H | A | Portal:Basque Language | ||
| Subclass PJ - Oriental languages and literatures | P | J | Portal:Oriental Languages and Literature | ||
| Subclass PK - Indo-Iranian languages and literatures | P | K | Portal:Indo-Iranian Languages and Literature | ||
| Subclass PL - Languages and literatures of Eastern Asia, Africa, Oceania | P | L | Portal:Languages and Literatures of Eastern Asia | ||
| P | L | A | Portal:Languages and Literatures of Africa | ||
| P | L | B | Portal:Languages and Literatures of Oceania | ||
| Subclass PM - Hyperborean, Indian, and artificial languages | P | M | Portal:Hyperborean Languages | ||
| P | M | A | Portal:Indian Languages | ||
| P | M | B | Portal:Artificial Languages | ||
| Subclass PN - Literature (General) | P | N | Portal:Literature | ||
| Subclass PQ - French literature - Italian literature - Spanish literature - Portuguese literature | P | Q | Portal:French Literature | ||
| P | Q | A | Portal:Italian Literature | ||
| P | Q | B | Portal:Spanish Literature | ||
| P | Q | C | Portal:Portuguese Literature | ||
| Subclass PR - English literature | P | R | Portal:English Literature | ||
| Subclass PS - American literature | P | S | Portal:American Literature | ||
| Subclass PT - German literature - Dutch literature - Flemish literature since 1830 - Afrikaans literature -Scandinavian literature - Old Norse literature: Old Icelandic and Old Norwegian - Modern Icelandic literature - Faroese literature - Danish literature - Norwegian literature - Swedish literature | P | T | Portal:German Literature | ||
| P | T | A | Portal:Dutch Literature | ||
| P | T | B | Portal:Flemish Literature | ||
| P | T | C | Portal:Afrikaans Literature | ||
| P | T | D | Portal:Scandinavian Literature | ||
| P | T | E | Portal:Old Norse Literature | ||
| P | T | F | Portal:Modern Icelandic Literature | ||
| P | T | G | Portal:Faroese Literature | ||
| P | T | H | Portal:Danish Literature | ||
| P | T | I | Portal:Norwegian Literature | ||
| P | T | J | Portal:Swedish Literature | ||
| Subclass PZ - Fiction and juvenile belles lettres | P | Z | Portal:Fiction and Juvenile Belles Lettres | ||
| Class Q - Science - Portal:Science | |||||
| Subclass Q - Science (General) | Q | — | Portal:Science (general) | ||
| Subclass QA - Mathematics | Q | A | Portal:Mathematics | ||
| Subclass QB - Astronomy | Q | B | Portal:Astronomy | ||
| Subclass QC - Physics | Q | C | Portal:Physics | ||
| Subclass QD - Chemistry | Q | D | Portal:Chemistry | ||
| Subclass QE - Geology | Q | E | Portal:Geology | ||
| Subclass QH - Natural history - Biology | Q | H | Portal:Natural History and Biology | ||
| Subclass QK - Botany | Q | K | Portal:Botany | ||
| Subclass QL - Zoology | Q | L | Portal:Zoology | ||
| Subclass QM - Human anatomy | Q | M | Portal:Human Anatomy | ||
| Subclass QP - Physiology | Q | P | Portal:Physiology | ||
| Subclass QR - Microbiology | Q | R | Portal:Microbiology | ||
| Class R - Medicine - Portal:Medicine | |||||
| Subclass R - Medicine (General) | R | — | Portal:Medicine (general) | ||
| Subclass RA - Public aspects of medicine | R | A | Portal:Public Aspects of Medicine | ||
| Subclass RB - Pathology | R | B | Portal:Pathology | ||
| Subclass RC - Internal medicine | R | C | Portal:Internal Medicine | ||
| Subclass RD - Surgery | R | D | Portal:Surgery | ||
| Subclass RE - Ophthalmology | R | E | Portal:Ophthalmology | ||
| Subclass RF - Otorhinolaryngology | R | F | Portal:Otorhinolaryngology | ||
| Subclass RG - Gynecology and obstetrics | R | G | Portal:Gynecology and Obstetrics | ||
| Subclass RJ - Pediatrics | R | J | Portal:Pediatrics | ||
| Subclass RK - Dentistry | R | K | Portal:Dentistry | ||
| Subclass RL - Dermatology | R | L | Portal:Dermatology | ||
| Subclass RM - Therapeutics. Pharmacology | R | M | Portal:Therapeutics | ||
| R | M | A | Portal:Pharmacology | ||
| Subclass RS - Pharmacy and materia medica | R | S | Portal:Pharmacy and Materia Medica | ||
| Subclass RT - Nursing | R | T | Portal:Nursing | ||
| Subclass RV - Botanic, Thomsonian, and eclectic medicine | R | V | Portal:Botanic, Thomsonian and Eclectic Medicine | ||
| Subclass RX - Homeopathy | R | X | Portal:Homeopathy | ||
| Subclass RZ - Other systems of medicine | R | Z | Portal:Other Systems of Medicine | ||
| Class S - Agriculture - Portal:Agriculture | |||||
| Subclass S - Agriculture (General) | S | — | Portal:Agriculture (general) | ||
| Subclass SB - Plant culture | S | B | Portal:Plant Culture | ||
| Subclass SD - Forestry | S | D | Portal:Forestry | ||
| Subclass SF - Animal culture | S | F | Portal:Animal Culture | ||
| Subclass SH - Aquaculture. Fisheries. Angling | S | H | Portal:Aquaculture | ||
| S | H | A | Portal:Fisheries | ||
| S | H | B | Portal:Angling | ||
| Subclass SK - Hunting sports | S | K | Portal:Hunting Sports | ||
| Class T - Technology - Portal:Technology | |||||
| Subclass T - Technology (General) | T | — | Portal:Technology (general) | ||
| Subclass TA - Engineering (General). Civil engineering | T | A | Portal:Civil Engineering | ||
| Subclass TC - Hydraulic engineering. Ocean engineering | T | C | Portal:Hydraulic Engineering | ||
| T | C | A | Portal:Ocean Engineering | ||
| Subclass TD - Environmental technology. Sanitary engineering | T | D | Portal:Environmental Technology | ||
| T | D | A | Portal:Sanitary Engineering | ||
| Subclass TE - Highway engineering. Roads and pavements | T | E | Portal:Highway Engineering | ||
| T | E | A | Portal:Roads and Pavements | ||
| Subclass TF - Railroad engineering and operation | T | F | Portal:Railroad Engineering and Operation | ||
| Subclass TG - Bridge engineering | T | G | Portal:Bridge Engineering | ||
| Subclass TH - Building construction | T | H | Portal:Building Construction | ||
| Subclass TJ - Mechanical engineering and machinery | T | J | Portal:Mechanical Engineering and Machinery | ||
| Subclass TK - Electrical engineering. Electronics. Nuclear engineering | T | K | Portal:Electrical Engineering | ||
| T | K | A | Portal:Electronics | ||
| T | K | B | Portal:Nuclear Engineering | ||
| Subclass TL - Motor vehicles. Aeronautics. Astronautics | T | L | Portal:Motor Vehicles | ||
| T | L | A | Portal:Aeronautics | ||
| T | L | B | Portal:Astronautics | ||
| Subclass TN - Mining engineering. Metallurgy | T | N | Portal:Mining engineering | ||
| T | N | A | Portal:Metallurgy | ||
| Subclass TP - Chemical technology | T | P | Portal:Chemical Technology | ||
| Subclass TR - Photography | T | R | Portal:Photography | ||
| Subclass TS - Manufactures | T | S | Portal:Manufactures | ||
| Subclass TT - Handicrafts. Arts and crafts | T | T | Portal:Handicrafts, Arts and Crafts | ||
| Subclass TX - Home economics | T | X | Portal:Home Economics | ||
| Class U - Military Science - Portal:Military Science | |||||
| Subclass U - Military science (General) | U | — | Portal:Military Science (general) | ||
| Subclass UA - Armies: Organization, distribution, military situation | U | A | Portal:Armies | ||
| Subclass UB - Military administration | U | B | Portal:Military Administration | ||
| Subclass UC - Maintenance and transportation | U | C | Portal:Maintenance and Transportation | ||
| Subclass UD - Infantry | U | D | Portal:Infantry | ||
| Subclass UE - Cavalry. Armor | U | E | Portal:Cavalry | ||
| U | E | A | Portal:Armor | ||
| Subclass UF - Artillery | U | F | Portal:Artillery | ||
| Subclass UG - Military engineering. Air forces | U | G | Portal:Military Engineering | ||
| U | G | A | Portal:Air Forces | ||
| Subclass UH - Other services | U | H | Portal:Other Military Services | ||
| Class V - Naval Science - Portal:Naval Science | |||||
| Subclass V - Naval science (General) | V | — | Portal:Naval Science (general) | ||
| Subclass VA - Navies: Organization, distribution, naval situation | V | A | Portal:Navies | ||
| Subclass VB - Naval administration | V | B | Portal:Naval Administration | ||
| Subclass VC - Naval maintenance | V | C | Portal:Naval Maintenance | ||
| Subclass VD - Naval seamen | V | D | Portal:Naval Seamen | ||
| Subclass VE - Marines | V | E | Portal:Marines | ||
| Subclass VF - Naval ordnance | V | F | Portal:Naval Ordnance | ||
| Subclass VG - Minor services of navies | V | G | Portal:Minor Services of Navies | ||
| Subclass VK - Navigation. Merchant marine | V | K | Portal:Navigation | ||
| V | K | A | Portal:Merchant Marine | ||
| Subclass VM - Naval architecture. Shipbuilding. Marine engineering | V | M | Portal:Naval Architecture | ||
| V | M | A | Portal:Shipbuilding | ||
| V | M | B | Portal:Marine Engineering | ||
| Class Z - Bibliography, Library Science - Portal:Bibliography and Library Science | |||||
| Subclass Z - Books (General). Writing. Paleography. Book industries and trade. Libraries. Bibliography | Z | — | Portal:Books | ||
| Z | — | A | Portal:Writing | ||
| Z | — | B | Portal:Paleography | ||
| Z | — | C | Portal:Book industries and trade | ||
| Z | — | D | Portal:Libraries | ||
| Z | — | E | Portal:Bibliography | ||
| Subclass ZA - Information resources (General) | Z | A | Portal:Information Resources | ||
Useful links[edit]
- Library of Congress Classification on Wikisource
- Library of Congress Classification on Wikipedia
- Offical Library of Congress Classification Page