Classification
300 - Social sciences
320 - Political science
46
330 - Economics
45
301 - Sociology & anthropology
9
900 - History & geography
9
140 - Specific philosophical schools
8
610 - Medicine & health
8
363 - Other social problems & services
6
370 - Education
6
700 - The arts; fine & decorative arts
6
100 - Philosophy & psychology
4
170 - Ethics
4
333 - Economics of land & energy
4
340 - Law
4
380 - Commerce, communications & transportation
4
600 - Technology
4
000 - Computer science, information & general works
3
304 - Factors affecting social behavior
3
630 - Agriculture & related technologies
3
658 - General management
3
200 - Religion
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
302 - Social interaction
1
381 - Commerce
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
670 - Manufacturing
1
720 - Architecture
1
800 - Literature & rhetoric
1