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