Classification
100 - Philosophy & psychology
363 - Other social problems & services
380 - Commerce, communications & transportation
000 - Computer science, information & general works
4
320 - Political science
3
800 - Literature & rhetoric
3
140 - Specific philosophical schools
2
330 - Economics
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
612 - Human physiology
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
400 - Language
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1
590 - Animals (Zoology)
1
600 - Technology
1
620 - Engineering & allied operations
1
658 - General management
1
720 - Architecture
1
780 - Music
1
791 - Public performances
1