000 Generalities

010 Bibliography
020 Library & information sciences
030 General encyclopedic works
040 (Not used)
050 General serials & their indexes
060 General organizations & museology
070 News media, journalism, publishing
080 General collections
090 Manuscripts & rare books

100 Philosophy & psychology

110 Metaphysics
120 Epistemology, causation, humankind
130 Paranormal phenomena
140 Specific philosophical schools
150 Psychology
160 Logic
170 Ethics (Moral philosophy)
180 Ancient, medieval, Oriental philosophy
190 Modern Western philosophy

200 Religion

210 Natural theology
220 Bible
230 Christian theology
240 Christian moral & devotional theology
250 Christian orders & local church
260 Christian social theology
270 Christian church history
280 Christian denominations & sects
290 Other & comparative religions

300 Social sciences

310 General statistics
320 Political science
330 Economics
340 Law
350 Public administration
360 Social services ; association
370 Education
380 Commerce, communications, transport
390 Customs, etiquette, folklore

400 Language

410 Linguistics
420 English & Old English
430 Germanic languages ; German
440 Romance languages ; French
450 Italian, Romanian, Rhaeto-Romantic
460 Spanish & Portuguese languages
470 Italic languages ; Latin
480 Hellenic languages ; Classical Greek
490 Other languages

500 Natural sciences & mathematics

510 Mathematics
520 Astronomy & allied sciences
530 Physics
540 Chemistry & allied sciences
550 Earth sciences
560 Paleontology ; Paleozoology
570 Life sciences
580 Botanical sciences
590 Zoological sciences

600 Technology (Applied sciences)

610 Medical sciences ; Medicine
620 Engineering & allied operations
630 Agriculture
640 Home economics & family living
650 Management & auxiliary services
660 Chemical engineering
670 Manufacturing
680 Manufacture for specific uses
690 Buildings

700 The arts

710 Civic & landscape art
720 Architecture
730 Plastic arts ; Sculpture
740 Drawing & decorative arts
750 Painting & paintings
760 Graphic arts ; Printmaking & prints
770 Photography & photographs
780 Music
790 Recreation & performing arts

800 Literature & rhetoric

810 American lit. in English
820 English & Old English lit.
830 Literatures of Germanic languages
840 Literatures of Romantic languages
850 Italian, Romanian, Rhaeto-Romantic
860 Spanish & Portuguese lit.
870 Italian lit. ; Latin
880 Hellenic literatures ; Classical Greek
890 Literatures of other languages

900 Geography & history

910 Geography & travel
920 Biography, genealogy, insignia
930 History of ancient world
940 General history of Europe
950 General history of Asia ; Far East
960 General history of Africa
970 General history of North America
980 General history of South America
990 General history of other areas