Classification
320 - Political science
330 - Economics
26
370 - Education
900 - History & geography
630 - Agriculture & related technologies
4
170 - Ethics
3
200 - Religion
3
300 - Social sciences
3
340 - Law
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
400 - Language
1
576 - Genetics & evolution
1
700 - The arts; fine & decorative arts
1