Classification
333 - Economics of land & energy
320 - Political science
8
330 - Economics
3
363 - Other social problems & services
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
140 - Specific philosophical schools
2
300 - Social sciences
2
304 - Factors affecting social behavior
2
600 - Technology
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
720 - Architecture
2
000 - Computer science, information & general works
1
301 - Sociology & anthropology
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
657 - Accounting
1
658 - General management
1