Classification
100 - Philosophy & psychology
900 - History & geography
320 - Political science
7
330 - Economics
5
333 - Economics of land & energy
5
300 - Social sciences
4
301 - Sociology & anthropology
4
140 - Specific philosophical schools
3
170 - Ethics
3
200 - Religion
3
340 - Law
3
370 - Education
2
576 - Genetics & evolution
2
610 - Medicine & health
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
400 - Language
1
530 - Physics
1
581 - Specific topics in natural history
1
600 - Technology
1
658 - General management
1