Classification
100 - Philosophy & psychology
700 - The arts; fine & decorative arts
7
780 - Music
900 - History & geography
4
300 - Social sciences
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
200 - Religion
2
301 - Sociology & anthropology
2
320 - Political science
2
330 - Economics
2
400 - Language
2
410 - Linguistics
2
770 - Photography, photographs & computer art
2
800 - Literature & rhetoric
2
333 - Economics of land & energy
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
530 - Physics
1
581 - Specific topics in natural history
1
590 - Animals (Zoology)
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
720 - Architecture
1
791 - Public performances
1