Classification
320 - Political science
330 - Economics
900 - History & geography
39
700 - The arts; fine & decorative arts
29
630 - Agriculture & related technologies
24
300 - Social sciences
18
600 - Technology
11
340 - Law
7
720 - Architecture
7
800 - Literature & rhetoric
6
170 - Ethics
3
500 - Natural sciences & mathematics
3
100 - Philosophy & psychology
2
200 - Religion
2
400 - Language
2
333 - Economics of land & energy
1
370 - Education
1