Classification
100 - Philosophy & psychology
000 - Computer science, information & general works
3
140 - Specific philosophical schools
2
320 - Political science
2
333 - Economics of land & energy
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
304 - Factors affecting social behavior
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1