Classification
320 - Political science
2,550
330 - Economics
2,550
900 - History & geography
484
300 - Social sciences
137
340 - Law
126
630 - Agriculture & related technologies
76
370 - Education
38
700 - The arts; fine & decorative arts
38
576 - Genetics & evolution
36
200 - Religion
21
500 - Natural sciences & mathematics
11
400 - Language
9
610 - Medicine & health
6
100 - Philosophy & psychology
5
170 - Ethics
5
800 - Literature & rhetoric
5
600 - Technology
4
160 - Logic
3
297 - Islam, Babism & Bahai Faith
1
326 - Slavery & emancipation
1
332 - Financial economics
1
354 - Administration of economy & environment
1
362 - Social welfare problems & services
1
388 - Transportation; ground transportation
1
550 - Earth sciences
1
616 - Diseases
1
639 - Hunting, fishing & conservation
1
920 - Biography, genealogy & insignia
1