Classification
100 - Philosophy & psychology
170 - Ethics
320 - Political science
7
140 - Specific philosophical schools
4
200 - Religion
3
370 - Education
3
120 - Epistemology, causation & humankind
2
380 - Commerce, communications & transportation
2
400 - Language
2
700 - The arts; fine & decorative arts
2
791 - Public performances
2
900 - History & geography
2
333 - Economics of land & energy
1
363 - Other social problems & services
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
770 - Photography, photographs & computer art
1