Classification
100 - Philosophy & psychology
330 - Economics
363 - Other social problems & services
800 - Literature & rhetoric
000 - Computer science, information & general works
2
200 - Religion
2
410 - Linguistics
2
581 - Specific topics in natural history
2
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
300 - Social sciences
1
301 - Sociology & anthropology
1
320 - Political science
1
333 - Economics of land & energy
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1