Classification
140 - Specific philosophical schools
320 - Political science
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
6
620 - Engineering & allied operations
5
900 - History & geography
5
340 - Law
4
576 - Genetics & evolution
4
720 - Architecture
4
330 - Economics
3
333 - Economics of land & energy
3
500 - Natural sciences & mathematics
3
581 - Specific topics in natural history
3
200 - Religion
2
361 - Social problems & social welfare in general
2
370 - Education
2
610 - Medicine & health
2
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
551 - Geology, hydrology & meteorology
1
657 - Accounting
1