Classification
320 - Political science
40,708
330 - Economics
340 - Law
4,735
900 - History & geography
3,713
300 - Social sciences
3,198
630 - Agriculture & related technologies
1,459
700 - The arts; fine & decorative arts
1,067
370 - Education
498
200 - Religion
406
576 - Genetics & evolution
353
170 - Ethics
196
800 - Literature & rhetoric
189
610 - Medicine & health
174
160 - Logic
83
100 - Philosophy & psychology
81
500 - Natural sciences & mathematics
79
600 - Technology
58
720 - Architecture
54
140 - Specific philosophical schools
52
400 - Language
52
780 - Music
25
000 - Computer science, information & general works
14
920 - Biography, genealogy & insignia
10
332 - Financial economics
7
550 - Earth sciences
7
530 - Physics
5
338 - Production
4
266 - Missions
3
296 - Judaism
3
336 - Public finance
3
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
343 - Military, tax, trade & industrial law
2
364 - Criminology
2
520 - Astronomy & allied sciences
2
326 - Slavery & emancipation
1
331 - Labor economics
1
333 - Economics of land & energy
1
337 - International economics
1
347 - Civil procedure & courts
1
354 - Administration of economy & environment
1
362 - Social welfare problems & services
1
368 - Insurance
1
382 - International commerce
1
388 - Transportation; ground transportation
1
603 - Dictionaries & encyclopedias
1
616 - Diseases
1
637 - Processing dairy & related products
1
639 - Hunting, fishing & conservation
1
657 - Accounting
1
more ...