Classification
320 - Political science
51
330 - Economics
40
370 - Education
30
300 - Social sciences
29
900 - History & geography
22
200 - Religion
12
361 - Social problems & social welfare in general
10
630 - Agriculture & related technologies
10
800 - Literature & rhetoric
10
140 - Specific philosophical schools
9
700 - The arts; fine & decorative arts
8
100 - Philosophy & psychology
7
340 - Law
7
360 - Social problems & services; associations
6
170 - Ethics
5
304 - Factors affecting social behavior
5
363 - Other social problems & services
5
400 - Language
5
500 - Natural sciences & mathematics
5
600 - Technology
4
780 - Music
4
364 - Criminology
3
410 - Linguistics
3
610 - Medicine & health
3
380 - Commerce, communications & transportation
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
530 - Physics
1
657 - Accounting
1
658 - General management
1