Classification
320 - Political science
100 - Philosophy & psychology
13
300 - Social sciences
13
900 - History & geography
8
170 - Ethics
5
700 - The arts; fine & decorative arts
5
200 - Religion
4
800 - Literature & rhetoric
3
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
400 - Language
2
600 - Technology
2
297 - Islam, Babism & Bahai Faith
1
330 - Economics
1
364 - Criminology
1
370 - Education
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
720 - Architecture
1
920 - Biography, genealogy & insignia
1