Classification
320 - Political science
370 - Education
700 - The arts; fine & decorative arts
4
720 - Architecture
330 - Economics
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
610 - Medicine & health
3
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
2
600 - Technology
2
900 - History & geography
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
300 - Social sciences
1
301 - Sociology & anthropology
1