Classification
320 - Political science
330 - Economics
340 - Law
900 - History & geography
300 - Social sciences
15
576 - Genetics & evolution
5
630 - Agriculture & related technologies
4
700 - The arts; fine & decorative arts
4
100 - Philosophy & psychology
2
170 - Ethics
2
370 - Education
2
140 - Specific philosophical schools
1
200 - Religion
1