Classification
100 - Philosophy & psychology
17
140 - Specific philosophical schools
1
170 - Ethics
9
200 - Religion
3
300 - Social sciences
54
320 - Political science
173
330 - Economics
173
340 - Law
26
370 - Education
3
576 - Genetics & evolution
3
630 - Agriculture & related technologies
14
900 - History & geography
17