Classification
300 - Social sciences
370 - Education
610 - Medicine & health
100 - Philosophy & psychology
3
333 - Economics of land & energy
3
900 - History & geography
3
320 - Political science
2
600 - Technology
2
301 - Sociology & anthropology
1
363 - Other social problems & services
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1