Classification
363 - Other social problems & services
2
580 - Plants (Botany)
581 - Specific topics in natural history
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
320 - Political science
1
333 - Economics of land & energy
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1