010 Bibliography 
020 Library & information sciences 
030 General encyclopedic works 
040 Special topics 
050 General serials & their indexes 
060 General organizations & museums 
070 New media, journalism, publishing 
080 General collections 
090 Manuscripts & rare books

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

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

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

410 Linguistics 
420 English & Anglo-Saxon languages 
430 Germanic languages (German) 
440 Romance languages (French) 
450 Italian, Romanian, Rhaeto-Romanic 
460 Spanish & Portuguese languages 
470 Italic languages (Latin) 
480 Hellenic languages (Classical Greek) 
490 Other languages

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

610 Medical sciences (Medicine, Psychiatry) 
620 Engineering 
630 Agriculture 
640 Home economics & family living 
650 Management 
660 Chemical engineering 
670 Manufacturing 
680 Manufacture for specific use 
690 Buildings

710 Civic & landscape art 
720 Architecture 
730 Sculpture 
740 Drawings & decorative arts 
750 Paintings & painters 
760 Graphic arts (Printmaking & prints) 
770 Photography 
780 Music 
790 Recreational & performing arts

810 American literature in English 
820 English literature 
830 Literature of Germanic language 
840 Literatures of Romance language 
850 Italian, Romanian, Rhaeto-Romanic Literatures 
860 Spanish & Portuguese literatures 
870 Italic literatures (Latin) 
880 Hellenic literatures (Classical Greek) 
890 Literatures of other languages

910 Geography & travel 
920 Biography, genealogy, insignia 
930 History of the 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