Classification
100 - Philosophy & psychology
320 - Political science
333 - Economics of land & energy
2
363 - Other social problems & services
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1