Classification
320 - Political science
251
330 - Economics
251
900 - History & geography
300 - Social sciences
52
576 - Genetics & evolution
11
340 - Law
10
630 - Agriculture & related technologies
9
700 - The arts; fine & decorative arts
4
100 - Philosophy & psychology
3
370 - Education
2
600 - Technology
2
170 - Ethics
1
200 - Religion
1
400 - Language
1
500 - Natural sciences & mathematics
1
610 - Medicine & health
1
800 - Literature & rhetoric
1
917 - Geography of & travel in North America
1
920 - Biography, genealogy & insignia
1