Classification
297 - Islam, Babism & Bahai Faith
320 - Political science
200 - Religion
37
900 - History & geography
21
300 - Social sciences
19
100 - Philosophy & psychology
16
700 - The arts; fine & decorative arts
14
330 - Economics
13
370 - Education
11
000 - Computer science, information & general works
10
333 - Economics of land & energy
10
140 - Specific philosophical schools
9
400 - Language
9
800 - Literature & rhetoric
9
304 - Factors affecting social behavior
8
340 - Law
8
363 - Other social problems & services
6
576 - Genetics & evolution
5
301 - Sociology & anthropology
4
380 - Commerce, communications & transportation
4
600 - Technology
4
170 - Ethics
3
410 - Linguistics
3
551 - Geology, hydrology & meteorology
3
780 - Music
3
296 - Judaism
2
350 - Public administration & military science
2
581 - Specific topics in natural history
2
658 - General management
2
720 - Architecture
2
120 - Epistemology, causation & humankind
1
361 - Social problems & social welfare in general
1
520 - Astronomy & allied sciences
1
530 - Physics
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1