Classification
140 - Specific philosophical schools
170 - Ethics
340 - Law
370 - Education
100 - Philosophy & psychology
3
304 - Factors affecting social behavior
2
333 - Economics of land & energy
2
600 - Technology
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
320 - Political science
1
330 - Economics
1
380 - Commerce, communications & transportation
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1