Classification
320 - Political science
700 - The arts; fine & decorative arts
900 - History & geography
38
300 - Social sciences
26
330 - Economics
19
333 - Economics of land & energy
16
340 - Law
13
100 - Philosophy & psychology
11
140 - Specific philosophical schools
11
576 - Genetics & evolution
9
363 - Other social problems & services
8
380 - Commerce, communications & transportation
8
000 - Computer science, information & general works
6
200 - Religion
6
400 - Language
6
297 - Islam, Babism & Bahai Faith
5
304 - Factors affecting social behavior
5
370 - Education
5
600 - Technology
5
720 - Architecture
4
301 - Sociology & anthropology
3
581 - Specific topics in natural history
3
620 - Engineering & allied operations
3
770 - Photography, photographs & computer art
3
780 - Music
3
170 - Ethics
2
296 - Judaism
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
350 - Public administration & military science
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
791 - Public performances
1