Classification
320 - Political science
363 - Other social problems & services
5
610 - Medicine & health
700 - The arts; fine & decorative arts
5
720 - Architecture
330 - Economics
4
333 - Economics of land & energy
4
380 - Commerce, communications & transportation
4
370 - Education
3
551 - Geology, hydrology & meteorology
3
900 - History & geography
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
600 - Technology
2
550 - Earth sciences
1