Classification
200 - Religion
301 - Sociology & anthropology
320 - Political science
300 - Social sciences
21
100 - Philosophy & psychology
13
900 - History & geography
13
700 - The arts; fine & decorative arts
8
600 - Technology
7
000 - Computer science, information & general works
6
330 - Economics
6
363 - Other social problems & services
6
140 - Specific philosophical schools
5
581 - Specific topics in natural history
5
170 - Ethics
4
333 - Economics of land & energy
4
340 - Law
4
361 - Social problems & social welfare in general
3
380 - Commerce, communications & transportation
3
297 - Islam, Babism & Bahai Faith
2
370 - Education
2
400 - Language
2
410 - Linguistics
2
530 - Physics
2
610 - Medicine & health
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
364 - Criminology
1
398 - Folklore
1
520 - Astronomy & allied sciences
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1
780 - Music
1