Page:2500 books for the prison library (1933).djvu/17

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CLASSIFICATION KEY

Ref REFERENCE
020 Preparing books for circulation; Book mending
028 Selecting books and magazines

100 PHILOSOPHY
150 Psychology
170 Conduct of life; Ethics

200 RELIGION
220 Bible; Jesus Christ
291 Mythology

300 SOCIOLOGY
326 Negroes
330 Economics
331 Labor and Laboring classes
332 Money; Banking; Investment
340 Law and order
350 Mechanics of government
364 Penology
368 Insurance
370 Education
383 Stamp collecting
388 Motor buses
395 Etiquette

400 LANGUAGE
423 Dictionaries
427 Citizenship for new Americans
428 Textbooks for foreigners learning English
429 Easy reading for foreigners learning English
430–490 Texts for learning foreign languages

500 SCIENCE
504 Nature study and essays
510 Mathematics
520 Astronomy
530 Physics
540 Chemistry
550 Geology; Weather
570 Biology
571 Prehistoric man
575 Evolution; Heredity
580 Botany
590 Zoology
595 Insects
597 Fishes
598 Birds
599 Animals

600 USEFUL ARTS
607 Vocational guidance
608 Inventions
610–614 Health, Hygiene and Public safety
620 Engineering
620.5 Mechanical drawing; Blueprint reading
621 Mechanical engineering; Machine shop practice
621.1 Steam, gas and oil engines
621.3 Electrical engineering
621.4 Radio and television
622 Mining engineering
623 Ships and shipbuilding; Navigation; Submarines
624 Civil engineering; Railroads
629 Automobiles
629.1 Aeronautics
630 Agriculture
631 Fertilizers; Soils
632 Insect pests and Blights
633 Field crops
634 Fruits; Orchards
635 Gardens, vegetable and flower
636 Domestic animals; Fur-farming
636.5 Poultry
637 Dairying
638 Bee-keeping
640 Home Economics
641 Cookery and food
645 Furnishing; Home decoration
646 Clothing; Sewing; Millinery
650 Business in general; Office methods; Salesmanship; Real estate
653 Secretarial work; Business letters; Stenography
655 Printing
657 Bookkeeping; Accounting
659 Advertising
671 Metal working
680 Mechanic trades; Shop work
682 Blacksmithing and Forge work
684 Carpentry
689 Handicrafts
690 Building
696 Plumbing
697 Heating and Ventilation
698 Painting and Paperhanging

700 FINE ARTS
720 Architecture
740 Drawing; Lettering; Cartoons
750 Painting
760 Block-printing