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Subclass Z
| Z4-115.5 | Books (General). Writing. Paleography | |||
| Z4-8 | History of books and bookmaking | |||
| Z40-104.5 | Writing | |||
| Z41-42.5 | Autographs. Signatures | |||
| Z43-45 | Calligraphy. Penmanship | |||
| Z48 | Duplicating processes. Copying services Including mimeographing, multilithing | |||
| Z49-51.5 | Typewriters. Typewriting. Keyboards. Keyboarding | |||
| Z52-52.5 | Word processing | |||
| Z53-102 | Shorthand. Stenography. Phonography | |||
| Z102.5-104.5 | Cryptography. Ciphers. Invisible writing | |||
| Z105-115.5 | Manuscripts. Paleography | |||
| Z116-659 | Book industries and trade | |||
| Z116.A2 | Treatises on the modern printed book | |||
| Z116.A3 | Book design | |||
| Z116.A5-265.5 | Printing | |||
| Z124-228 | History | |||
| Z231-234 | Printers and printing establishments | |||
| Z234 | Medallic history of printing. Tokens | |||
| Z235-236 | Printer's marks, mottoes, etc. | |||
| Z237 | Paper. Watermarks, etc. | |||
| Z240-241.5 | Incunabula. Block books Including broadsides, playing cards | |||
| Z242.9-264.5 | Practical printing Including printing as a business, layout, paper and ink, machinery, type and type founding, electrotyping, desktop publishing, typesetting, presswork | |||
| Z265-265.5 | Representation or reproduction of books, documents, etc., by photography, microphotography, or other means | |||
| Z266-276 | Bookbinding. Book decoration | |||
| Z278-549 | Bookselling and publishing | |||
| Z551-656 | Copyright | |||
| Z657-659 | Freedom of the press. Censorship | |||
| Z662-1000.5 | Libraries | |||
| Z662-664 | Collections | |||
| Z665-718.8 | Library science. Information science | |||
| Z668-669.7 | Library education. Research | |||
| Z672-Z672.13 | Library cooperation and coordination | |||
| Z674.7-674.83 | Library information networks | |||
| Z675 | Classes of libraries | |||
| Z678-678.88 | Library administration and organization. Constitution | |||
| Z678.89-678.892 | Library service agencies | |||
| Z678.9-Z678.93 | Automation | |||
| Z679-680 | Library buildings. Library architecture Including planning, space utilization, security, safety, lighting, etc. | |||
| Z680.3-680.6 | Library communication systems | |||
