Classification
400 - Language
4
410 - Linguistics
4
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
140 - Specific philosophical schools
3
333 - Economics of land & energy
3
000 - Computer science, information & general works
2
320 - Political science
2
500 - Natural sciences & mathematics
2
780 - Music
2
900 - History & geography
2
100 - Philosophy & psychology
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
330 - Economics
1
581 - Specific topics in natural history
1