Classification
300 - Social sciences
320 - Political science
300
330 - Economics
300
900 - History & geography
576 - Genetics & evolution
52
340 - Law
15
630 - Agriculture & related technologies
7
700 - The arts; fine & decorative arts
6
100 - Philosophy & psychology
3
170 - Ethics
2
370 - Education
2
160 - Logic
1
200 - Religion
1
343 - Military, tax, trade & industrial law
1