Classification
333 - Economics of land & energy
5
370 - Education
4
140 - Specific philosophical schools
3
363 - Other social problems & services
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
100 - Philosophy & psychology
2
170 - Ethics
2
200 - Religion
2
551 - Geology, hydrology & meteorology
2
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
320 - Political science
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1