Classification
320 - Political science
700 - The arts; fine & decorative arts
32
330 - Economics
29
300 - Social sciences
23
100 - Philosophy & psychology
21
900 - History & geography
20
333 - Economics of land & energy
15
140 - Specific philosophical schools
11
576 - Genetics & evolution
11
370 - Education
10
170 - Ethics
8
363 - Other social problems & services
7
600 - Technology
7
200 - Religion
6
301 - Sociology & anthropology
6
380 - Commerce, communications & transportation
6
800 - Literature & rhetoric
5
361 - Social problems & social welfare in general
4
000 - Computer science, information & general works
3
304 - Factors affecting social behavior
3
340 - Law
3
350 - Public administration & military science
3
400 - Language
3
551 - Geology, hydrology & meteorology
3
610 - Medicine & health
3
620 - Engineering & allied operations
3
581 - Specific topics in natural history
2
720 - Architecture
2
630 - Agriculture & related technologies
1