Classification
330 - Economics
481
320 - Political science
474
300 - Social sciences
79
380 - Commerce, communications & transportation
46
900 - History & geography
40
340 - Law
32
820 - English & Old English literatures
23
370 - Education
6
630 - Agriculture & related technologies
4
700 - The arts; fine & decorative arts
4
800 - Literature & rhetoric
4
140 - Specific philosophical schools
2
200 - Religion
2
576 - Genetics & evolution
2
640 - Home & family management
2
660 - Chemical engineering
2
160 - Logic
1
280 - Christian denominations & sects
1
305 - Social groups
1
306 - Culture & institutions
1
325 - International migration & colonization
1
580 - Plants (Botany)
1
920 - Biography, genealogy & insignia
1
970 - History of North America
1