Classification
100 - Philosophy & psychology
350 - Public administration & military science
320 - Political science
11
330 - Economics
7
300 - Social sciences
3
301 - Sociology & anthropology
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
333 - Economics of land & energy
1
340 - Law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1