Classification
320 - Political science
330 - Economics
167
300 - Social sciences
31
900 - History & geography
13
340 - Law
7
700 - The arts; fine & decorative arts
4
170 - Ethics
3
140 - Specific philosophical schools
2
200 - Religion
2
630 - Agriculture & related technologies
2
550 - Earth sciences
1
576 - Genetics & evolution
1