Classification
301 - Sociology & anthropology
400 - Language
410 - Linguistics
900 - History & geography
300 - Social sciences
5
800 - Literature & rhetoric
5
100 - Philosophy & psychology
4
700 - The arts; fine & decorative arts
4
320 - Political science
3
780 - Music
3
140 - Specific philosophical schools
2
370 - Education
2
398 - Folklore
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
200 - Religion
1
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1