Classification
140 - Specific philosophical schools
300 - Social sciences
320 - Political science
37
100 - Philosophy & psychology
29
900 - History & geography
25
700 - The arts; fine & decorative arts
24
301 - Sociology & anthropology
19
600 - Technology
18
330 - Economics
17
170 - Ethics
15
370 - Education
15
340 - Law
12
363 - Other social problems & services
11
333 - Economics of land & energy
10
380 - Commerce, communications & transportation
10
200 - Religion
9
610 - Medicine & health
8
800 - Literature & rhetoric
8
361 - Social problems & social welfare in general
7
304 - Factors affecting social behavior
6
720 - Architecture
6
576 - Genetics & evolution
5
581 - Specific topics in natural history
5
620 - Engineering & allied operations
5
780 - Music
5
000 - Computer science, information & general works
4
120 - Epistemology, causation & humankind
3
297 - Islam, Babism & Bahai Faith
2
360 - Social problems & services; associations
2
364 - Criminology
2
500 - Natural sciences & mathematics
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
400 - Language
1
410 - Linguistics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
791 - Public performances
1