Classification
140 - Specific philosophical schools
200 - Religion
900 - History & geography
6
333 - Economics of land & energy
5
700 - The arts; fine & decorative arts
5
100 - Philosophy & psychology
4
370 - Education
4
410 - Linguistics
4
170 - Ethics
3
320 - Political science
3
363 - Other social problems & services
3
400 - Language
3
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
2
330 - Economics
2
610 - Medicine & health
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
304 - Factors affecting social behavior
1
340 - Law
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
770 - Photography, photographs & computer art
1
780 - Music
1