Classification
320 - Political science
538
330 - Economics
538
300 - Social sciences
149
630 - Agriculture & related technologies
61
900 - History & geography
56
340 - Law
36
170 - Ethics
13
700 - The arts; fine & decorative arts
11
370 - Education
6
200 - Religion
4
600 - Technology
4
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
336 - Public finance
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
332 - Financial economics
1
400 - Language
1
720 - Architecture
1
917 - Geography of & travel in North America
1