For a more user-friendly approach to the Dewey Decimal system, take a look at our Browser's Guide.

000  GENERAL WORKS                                          500 PURE SCIENCE
 010 Bibliography                                                            510 Mathematics
 020 Library and information science                                520 Astronomy
 030 General encyclopedias                                             530 Physics
 050 General periodicals                                                  540 Chemistry, crystallography, mineralogy
 060 General organizations and museum science               550 Earth sciences
 070 Journalism, news media, and publishing                    560 Paleontology
 080 General collections                                                  570 Life sciences
 090 Manuscripts and rare books                                    580 Botanical sciences
                                                                                       590 Zoological sciences

100 PHILOSOPHY                                                    600 TECHNOLOGY
110 Metaphysics                                                            610 Medical sciences
120 Metaphysical theories and humankind                       620 Engineering
130 Paranormal phenomena                                            630 Agriculture
140 Philosophical topics                                                  640 Home economics and family living
150 Psychology                                                              650 Business management
160 Logic                                                                       660 Chemical technology
170 Ethics                                                                       680 Other manufacturing
180 Ancient medieval and Oriental philosophy                 690 Buildings
190 Modern Western philosophy

200  RELIGION                                                        700 THE ARTS
210 Natural theology                                                      710 Landscape and civic art
220 Bible                                                                       720 Architecture
230 Christian doctrinal theology                                      730 Sculpture
240 Christian devotional and devotional theology            740 Drawing and decorative arts
250 Christian communities                                              750 Painting
260 Christian social and ecclesiastical theology                760 Graphic arts
270 Christian church history                                            770 Photography
280 Christian churches and sects                                     780 Music
290 Comparative religion                                                790 Recreational and performing arts

300  SOCIAL SCIENCES                                        800 LITERATURE
310 Statistics                                                                 810 American literature in English
320 Politics and Government                                         820 English and Old English literatures
330 Economics                                                             830 Germanic literatures
340 Law                                                                       840 French literature
350 Public administration and military science                850 Italian & Romanian literature
360 Social problems and services                                  860 Spanish & Portuguese literature
370 Education                                                               870 Latin literature
380 Commerce, communications, transportation            880 Greek literature
390 Customs, folklore, etiquette                                    890 Other literatures

400 LANGUAGE                                                     900 HISTORY
410 Linguistics                                                                910 Geography and travel
420 English and Anglo-Saxon                                         920 Biography, genealogy, insignia
430 Germanic languages                                                 930 Ancient history
440 French, Provencal, Catalan                                      940 European history
450 Italian, Rumanian                                                     950 Asian history
460 Spanish, Portuguese                                                960 African history
470 Latin and other italic languages                                 970 North American history
480 Greek                                                                     980 South American history
490 Other languages                                                      990 Other histories including extraterrestrial worlds