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