Classification
320 - Political science
330 - Economics
386
340 - Law
48
370 - Education
45
900 - History & geography
24
610 - Medicine & health
19
700 - The arts; fine & decorative arts
17
300 - Social sciences
16
140 - Specific philosophical schools
15
333 - Economics of land & energy
10
100 - Philosophy & psychology
9
363 - Other social problems & services
9
200 - Religion
8
000 - Computer science, information & general works
5
304 - Factors affecting social behavior
4
361 - Social problems & social welfare in general
4
780 - Music
4
170 - Ethics
3
301 - Sociology & anthropology
3
380 - Commerce, communications & transportation
3
400 - Language
3
364 - Criminology
2
410 - Linguistics
2
581 - Specific topics in natural history
2
360 - Social problems & services; associations
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
600 - Technology
1
630 - Agriculture & related technologies
1
658 - General management
1
720 - Architecture
1
800 - Literature & rhetoric
1