Classification
120 - Epistemology, causation & humankind
340 - Law
100 - Philosophy & psychology
9
320 - Political science
5
140 - Specific philosophical schools
4
170 - Ethics
4
700 - The arts; fine & decorative arts
4
200 - Religion
3
900 - History & geography
3
000 - Computer science, information & general works
2
300 - Social sciences
2
304 - Factors affecting social behavior
2
333 - Economics of land & energy
2
370 - Education
2
400 - Language
2
530 - Physics
2
576 - Genetics & evolution
2
600 - Technology
2
297 - Islam, Babism & Bahai Faith
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1