Classification
320 - Political science
340 - Law
363 - Other social problems & services
700 - The arts; fine & decorative arts
23
330 - Economics
19
333 - Economics of land & energy
19
140 - Specific philosophical schools
14
380 - Commerce, communications & transportation
11
551 - Geology, hydrology & meteorology
11
600 - Technology
11
900 - History & geography
11
000 - Computer science, information & general works
10
300 - Social sciences
9
610 - Medicine & health
9
581 - Specific topics in natural history
8
100 - Philosophy & psychology
6
301 - Sociology & anthropology
5
620 - Engineering & allied operations
5
630 - Agriculture & related technologies
5
170 - Ethics
4
576 - Genetics & evolution
4
720 - Architecture
4
200 - Religion
3
500 - Natural sciences & mathematics
3
580 - Plants (Botany)
3
370 - Education
2
410 - Linguistics
2
658 - General management
2
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
530 - Physics
1
657 - Accounting
1
800 - Literature & rhetoric
1