Classification
333 - Economics of land & energy
200 - Religion
13
140 - Specific philosophical schools
7
700 - The arts; fine & decorative arts
6
900 - History & geography
6
330 - Economics
5
370 - Education
5
100 - Philosophy & psychology
4
297 - Islam, Babism & Bahai Faith
4
320 - Political science
4
363 - Other social problems & services
4
170 - Ethics
3
610 - Medicine & health
3
000 - Computer science, information & general works
2
300 - Social sciences
2
301 - Sociology & anthropology
2
400 - Language
2
410 - Linguistics
2
581 - Specific topics in natural history
2
296 - Judaism
1
304 - Factors affecting social behavior
1
340 - Law
1
360 - Social problems & services; associations
1
414 - Phonology & phonetics
1
576 - Genetics & evolution
1
600 - Technology
1
620 - Engineering & allied operations
1
780 - Music
1
800 - Literature & rhetoric
1