Classification
300 - Social sciences
340 - Law
363 - Other social problems & services
140 - Specific philosophical schools
9
320 - Political science
9
333 - Economics of land & energy
9
700 - The arts; fine & decorative arts
8
330 - Economics
7
301 - Sociology & anthropology
5
370 - Education
5
610 - Medicine & health
5
900 - History & geography
5
000 - Computer science, information & general works
4
170 - Ethics
4
380 - Commerce, communications & transportation
4
600 - Technology
4
620 - Engineering & allied operations
4
800 - Literature & rhetoric
4
720 - Architecture
3
100 - Philosophy & psychology
2
200 - Religion
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
400 - Language
1
500 - Natural sciences & mathematics
1
530 - Physics
1
581 - Specific topics in natural history
1