Classification
200 - Religion
900 - History & geography
18
320 - Political science
6
100 - Philosophy & psychology
5
300 - Social sciences
4
140 - Specific philosophical schools
3
301 - Sociology & anthropology
3
380 - Commerce, communications & transportation
3
700 - The arts; fine & decorative arts
3
170 - Ethics
2
340 - Law
2
370 - Education
2
576 - Genetics & evolution
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
330 - Economics
1
333 - Economics of land & energy
1
400 - Language
1
600 - Technology
1
630 - Agriculture & related technologies
1