Classification
100 - Philosophy & psychology
791 - Public performances
700 - The arts; fine & decorative arts
6
900 - History & geography
4
000 - Computer science, information & general works
3
380 - Commerce, communications & transportation
3
610 - Medicine & health
2
140 - Specific philosophical schools
1
300 - Social sciences
1
301 - Sociology & anthropology
1
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
400 - Language
1
581 - Specific topics in natural history
1
590 - Animals (Zoology)
1
600 - Technology
1
620 - Engineering & allied operations
1
780 - Music
1
800 - Literature & rhetoric
1