Classification
140 - Specific philosophical schools
200 - Religion
320 - Political science
600 - Technology
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
4
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
361 - Social problems & social welfare in general
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
581 - Specific topics in natural history
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
333 - Economics of land & energy
1
800 - Literature & rhetoric
1