Classification
120 - Epistemology, causation & humankind
140 - Specific philosophical schools
5
600 - Technology
100 - Philosophy & psychology
4
170 - Ethics
3
320 - Political science
3
000 - Computer science, information & general works
2
200 - Religion
2
300 - Social sciences
2
530 - Physics
2
700 - The arts; fine & decorative arts
2
160 - Logic
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
340 - Law
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
900 - History & geography
1