Classification
320 - Political science
200 - Religion
117
330 - Economics
117
900 - History & geography
57
100 - Philosophy & psychology
35
170 - Ethics
17
370 - Education
17
160 - Logic
15
300 - Social sciences
14
140 - Specific philosophical schools
11
297 - Islam, Babism & Bahai Faith
11
700 - The arts; fine & decorative arts
11
333 - Economics of land & energy
8
340 - Law
7
800 - Literature & rhetoric
7
301 - Sociology & anthropology
5
576 - Genetics & evolution
5
296 - Judaism
4
530 - Physics
4
363 - Other social problems & services
3
400 - Language
3
600 - Technology
3
610 - Medicine & health
3
000 - Computer science, information & general works
2
581 - Specific topics in natural history
2
261 - Social theology
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
780 - Music
1
920 - Biography, genealogy & insignia
1
973 - United States
1