Classification
320 - Political science
78
330 - Economics
78
400 - Language
170 - Ethics
17
900 - History & geography
11
700 - The arts; fine & decorative arts
5
370 - Education
4
300 - Social sciences
3
340 - Law
3
200 - Religion
2
100 - Philosophy & psychology
1
500 - Natural sciences & mathematics
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1