Classification
320 - Political science
67
100 - Philosophy & psychology
29
300 - Social sciences
18
900 - History & geography
15
340 - Law
8
330 - Economics
6
140 - Specific philosophical schools
5
200 - Religion
5
170 - Ethics
4
301 - Sociology & anthropology
4
700 - The arts; fine & decorative arts
4
600 - Technology
3
576 - Genetics & evolution
2
120 - Epistemology, causation & humankind
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
551 - Geology, hydrology & meteorology
1