Classification
304 - Factors affecting social behavior
100 - Philosophy & psychology
36
300 - Social sciences
26
320 - Political science
23
900 - History & geography
16
370 - Education
13
330 - Economics
10
170 - Ethics
8
610 - Medicine & health
8
140 - Specific philosophical schools
5
340 - Law
5
301 - Sociology & anthropology
4
700 - The arts; fine & decorative arts
4
363 - Other social problems & services
3
200 - Religion
2
333 - Economics of land & energy
2
400 - Language
2
410 - Linguistics
2
600 - Technology
2
800 - Literature & rhetoric
2
920 - Biography, genealogy & insignia
2
331 - Labor economics
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
658 - General management
1
670 - Manufacturing
1
780 - Music
1