Classification
100 - Philosophy & psychology
120 - Epistemology, causation & humankind
200 - Religion
320 - Political science
000 - Computer science, information & general works
3
300 - Social sciences
3
900 - History & geography
3
170 - Ethics
2
400 - Language
2
410 - Linguistics
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
330 - Economics
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
530 - Physics
1
600 - Technology
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1