Classification
300 - Social sciences
320 - Political science
330 - Economics
333 - Economics of land & energy
900 - History & geography
100 - Philosophy & psychology
4
363 - Other social problems & services
3
400 - Language
3
410 - Linguistics
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
200 - Religion
2
301 - Sociology & anthropology
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
340 - Law
1
370 - Education
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
658 - General management
1
770 - Photography, photographs & computer art
1
780 - Music
1