Classification
320 - Political science
285
330 - Economics
267
900 - History & geography
101
300 - Social sciences
62
576 - Genetics & evolution
61
820 - English & Old English literatures
54
340 - Law
52
333 - Economics of land & energy
35
630 - Agriculture & related technologies
20
370 - Education
15
200 - Religion
10
700 - The arts; fine & decorative arts
8
100 - Philosophy & psychology
5
380 - Commerce, communications & transportation
4
940 - History of Europe
3
282 - Roman Catholic Church
2
363 - Other social problems & services
2
610 - Medicine & health
2
800 - Literature & rhetoric
2
840 - Literatures of Romance languages
2
000 - Computer science, information & general works
1
005 - Computer programming, programs & data
1
280 - Christian denominations & sects
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
400 - Language
1
500 - Natural sciences & mathematics
1
600 - Technology
1
620 - Engineering & allied operations
1
810 - American literature in English
1
970 - History of North America
1