Classification
320 - Political science
15
333 - Economics of land & energy
900 - History & geography
300 - Social sciences
10
330 - Economics
8
610 - Medicine & health
5
000 - Computer science, information & general works
4
301 - Sociology & anthropology
4
100 - Philosophy & psychology
3
120 - Epistemology, causation & humankind
2
200 - Religion
2
304 - Factors affecting social behavior
2
340 - Law
2
350 - Public administration & military science
2
551 - Geology, hydrology & meteorology
2
140 - Specific philosophical schools
1
363 - Other social problems & services
1
370 - Education
1
581 - Specific topics in natural history
1
600 - Technology
1
700 - The arts; fine & decorative arts
1