Classification
100 - Philosophy & psychology
330 - Economics
333 - Economics of land & energy
4
363 - Other social problems & services
900 - History & geography
300 - Social sciences
3
320 - Political science
3
581 - Specific topics in natural history
3
301 - Sociology & anthropology
2
576 - Genetics & evolution
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
350 - Public administration & military science
1
400 - Language
1
410 - Linguistics
1
600 - Technology
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1