Classification
140 - Specific philosophical schools
300 - Social sciences
330 - Economics
340 - Law
320 - Political science
7
370 - Education
6
363 - Other social problems & services
5
301 - Sociology & anthropology
4
333 - Economics of land & energy
4
700 - The arts; fine & decorative arts
4
900 - History & geography
4
600 - Technology
3
620 - Engineering & allied operations
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
170 - Ethics
2
304 - Factors affecting social behavior
2
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
400 - Language
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
720 - Architecture
1
800 - Literature & rhetoric
1