Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
363 - Other social problems & services
600 - Technology
700 - The arts; fine & decorative arts
7
380 - Commerce, communications & transportation
6
330 - Economics
4
333 - Economics of land & energy
4
361 - Social problems & social welfare in general
3
610 - Medicine & health
3
200 - Religion
2
370 - Education
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
620 - Engineering & allied operations
2
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
340 - Law
1
576 - Genetics & evolution
1
657 - Accounting
1
720 - Architecture
1
900 - History & geography
1