Classification
530 - Physics
900 - History & geography
8
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
363 - Other social problems & services
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
330 - Economics
1
333 - Economics of land & energy
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
539 - Modern physics
1
600 - Technology
1
610 - Medicine & health
1
780 - Music
1