Classification
100 - Philosophy & psychology
340 - Law
320 - Political science
9
900 - History & geography
6
140 - Specific philosophical schools
5
300 - Social sciences
4
301 - Sociology & anthropology
3
330 - Economics
3
700 - The arts; fine & decorative arts
3
170 - Ethics
2
200 - Religion
2
120 - Epistemology, causation & humankind
1
333 - Economics of land & energy
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
1
581 - Specific topics in natural history
1
770 - Photography, photographs & computer art
1
780 - Music
1