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