Classification
320 - Political science
330 - Economics
300 - Social sciences
71
900 - History & geography
20
630 - Agriculture & related technologies
17
340 - Law
8
140 - Specific philosophical schools
5
700 - The arts; fine & decorative arts
4
170 - Ethics
3
200 - Religion
3
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
370 - Education
1
382 - International commerce
1
550 - Earth sciences
1
576 - Genetics & evolution
1
610 - Medicine & health
1