Classification
300 - Social sciences
320 - Political science
330 - Economics
700 - The arts; fine & decorative arts
900 - History & geography
100 - Philosophy & psychology
8
600 - Technology
7
000 - Computer science, information & general works
6
333 - Economics of land & energy
6
400 - Language
6
410 - Linguistics
5
780 - Music
5
301 - Sociology & anthropology
4
340 - Law
4
363 - Other social problems & services
4
370 - Education
4
620 - Engineering & allied operations
4
140 - Specific philosophical schools
3
380 - Commerce, communications & transportation
3
630 - Agriculture & related technologies
3
770 - Photography, photographs & computer art
3
200 - Religion
2
658 - General management
2
720 - Architecture
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
530 - Physics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1