Classification
330 - Economics
6
610 - Medicine & health
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
3
300 - Social sciences
3
333 - Economics of land & energy
3
600 - Technology
3
620 - Engineering & allied operations
3
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
370 - Education
2
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
630 - Agriculture & related technologies
1
791 - Public performances
1
900 - History & geography
1