Classification
700 - The arts; fine & decorative arts
900 - History & geography
2,746
320 - Political science
2,351
330 - Economics
2,300
600 - Technology
1,946
610 - Medicine & health
1,488
000 - Computer science, information & general works
1,469
333 - Economics of land & energy
1,431
620 - Engineering & allied operations
1,259
363 - Other social problems & services
958
340 - Law
888
140 - Specific philosophical schools
785
380 - Commerce, communications & transportation
675
300 - Social sciences
575
100 - Philosophy & psychology
566
400 - Language
550
800 - Literature & rhetoric
538
580 - Plants (Botany)
537
370 - Education
527
500 - Natural sciences & mathematics
391
576 - Genetics & evolution
383
720 - Architecture
371
410 - Linguistics
370
540 - Chemistry & allied sciences
361
200 - Religion
311
551 - Geology, hydrology & meteorology
284
530 - Physics
282
630 - Agriculture & related technologies
279
780 - Music
267
301 - Sociology & anthropology
219
414 - Phonology & phonetics
186
304 - Factors affecting social behavior
164
581 - Specific topics in natural history
163
658 - General management
162
170 - Ethics
149
612 - Human physiology
112
770 - Photography, photographs & computer art
102
615 - Pharmacology & therapeutics
73
791 - Public performances
59
361 - Social problems & social welfare in general
58
297 - Islam, Babism & Bahai Faith
55
120 - Epistemology, causation & humankind
43
001 - Knowledge
36
520 - Astronomy & allied sciences
25
006 - Special computer methods
21
160 - Logic
20
005 - Computer programming, programs & data
18
657 - Accounting
18
296 - Judaism
15
550 - Earth sciences
15
more ...