Classification
320 - Political science
167
330 - Economics
167
900 - History & geography
20
340 - Law
17
300 - Social sciences
10
700 - The arts; fine & decorative arts
7
500 - Natural sciences & mathematics
5
630 - Agriculture & related technologies
3
200 - Religion
2
326 - Slavery & emancipation
1
400 - Language
1
800 - Literature & rhetoric
1