Classification
330 - Economics
54
320 - Political science
27
300 - Social sciences
18
340 - Law
17
900 - History & geography
13
327 - International relations
6
700 - The arts; fine & decorative arts
5
170 - Ethics
4
380 - Commerce, communications & transportation
4
800 - Literature & rhetoric
4
100 - Philosophy & psychology
3
600 - Technology
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
200 - Religion
2
301 - Sociology & anthropology
2
305 - Social groups
2
333 - Economics of land & energy
2
370 - Education
2
306 - Culture & institutions
1
322 - Relation of state to organized groups
1
338 - Production
1
341 - Law of nations
1
363 - Other social problems & services
1
364 - Criminology
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
724 - Architecture from 1400
1
796 - Athletic & outdoor sports & games
1
813 - American fiction in English
1
909 - World history
1
959 - Southeast Asia
1
962 - Egypt & Sudan
1
996 - Other parts of Pacific; Polynesia
1