Classification
320 - Political science
400 - Language
800 - Literature & rhetoric
900 - History & geography
13
410 - Linguistics
10
700 - The arts; fine & decorative arts
8
100 - Philosophy & psychology
7
140 - Specific philosophical schools
5
200 - Religion
5
330 - Economics
4
333 - Economics of land & energy
4
300 - Social sciences
3
301 - Sociology & anthropology
3
340 - Law
3
170 - Ethics
2
297 - Islam, Babism & Bahai Faith
2
304 - Factors affecting social behavior
2
370 - Education
2
380 - Commerce, communications & transportation
2
581 - Specific topics in natural history
2
780 - Music
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
414 - Phonology & phonetics
1
580 - Plants (Botany)
1
891 - East Indo-European & Celtic literatures
1