Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
300 - Social sciences
320 - Political science
5
333 - Economics of land & energy
200 - Religion
4
330 - Economics
4
140 - Specific philosophical schools
2
170 - Ethics
2
301 - Sociology & anthropology
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
363 - Other social problems & services
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