Classification
330 - Economics
193
320 - Political science
117
630 - Agriculture & related technologies
81
300 - Social sciences
56
820 - English & Old English literatures
14
340 - Law
7
700 - The arts; fine & decorative arts
4
900 - History & geography
4
360 - Social problems & services; associations
3
100 - Philosophy & psychology
2
130 - Parapsychology & occultism
1
200 - Religion
1
290 - Other religions
1
296 - Judaism
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1