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