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DDC classification (13222)
- 000 Generalities, Science (127)
- 004 Data processing Computer science (121)
- 010 Bibliography (1)
- 020 Library and information sciences (101)
- 050 General serials and their indexes (2)
- 060 General organization and museology (5)
- 080 General collections (3)
- 090 Manuscripts and rare books (11)
- 100 Philosophy (29)
- 150 Psychology (239)
- 200 Religion (253)
- 220 Bible (2)
- 230 Christian theology (19)
- 290 Other and comparative religions (22)
- 300 Social sciences (255)
- 310 General statistics (3)
- 320 Political science (132)
- 330 Economics (202)
- 340 Law (33)
- 350 Public administration (1)
- 355 Military science (3)
- 360 "Social services; association" (13)
- 370 Education (64)
- 380 Commerce, communications, transport (2)
- 390 Customs, etiquette, folklore (25)
- 400 Linguistics (23)
- 420 English (4)
- 430 Germanic (16)
- 440 Romance languages French (4)
- 450 Italian, Romanian, Rhaeto-Romantic (2)
- 460 Spanish and Portugese languages (2)
- 470 Italic Latin (11)
- 480 Hellenic languages Classical Greek (1)
- 490 Other languages (3)
- 500 Natural sciences and mathematics (101)
- 510 Mathematics (454)
- 520 Astronomy and allied sciences (218)
- 530 Physics (1152)
- 540 Chemistry and allied sciences (326)
- 550 Earth sciences (138)
- 560 Paleontology Paleozoology (2)
- 570 Life sciences (972)
- 580 Botanical sciences (12)
- 590 Zoological sciences (13)
- 600 Technology (Applied sciences) (8)
- 610 Medical sciences Medicine (7598)
- 620 Engineering and allied operations (7)
- 630 Agriculture (1)
- 640 Home economics and family living (1)
- 650 Management and auxiliary services (3)
- 660 Chemical engineering (3)
- 690 Buildings (3)
- 700 The arts (25)
- 720 Architecture (14)
- 730 Plastic arts Sculpture (12)
- 740 Drawing and decorative arts (3)
- 750 Painting and paintings (14)
- 760 Graphic arts Printmaking and prints (3)
- 770 Photography and photographs (2)
- 780 Music (30)
- 790 Recreational and performing arts (1)
- 791 Public performances (6)
- 792 Stage presentations (3)
- 796 Athletic and outdoor sports and games (35)
- 800 Literature and rhetoric (35)
- 810 American literature in English (5)
- 820 English and Old English literatures (7)
- 830 Literatures of Germanic languages (10)
- 840 Literatures of Romance languages (27)
- 850 Italian, Romanian, Rhaeto-Romanic literatures (1)
- 860 Spanish and Portuguese literatures (1)
- 870 Italic literatures Latin (6)
- 890 Literatures of other languages (7)
- 900 Geography and history (187)
- 910 Geography and travel (10)
- 920 Biography, genealogy, insignia (2)
- 930 History of ancient world (61)
- 940 General history of Europe (13)
- 943 General history of Europe Central Europe Germany (40)
- 950 General history of Asia Far East (70)
- 960 General history of Africa (2)
- 970 General history of North America (3)
- 990 General history of other areas (2)