Classification
100 - Philosophy & psychology
370 - Education
900 - History & geography
15
300 - Social sciences
10
700 - The arts; fine & decorative arts
7
140 - Specific philosophical schools
6
333 - Economics of land & energy
6
170 - Ethics
5
320 - Political science
4
600 - Technology
4
380 - Commerce, communications & transportation
3
400 - Language
3
576 - Genetics & evolution
3
000 - Computer science, information & general works
2
200 - Religion
2
363 - Other social problems & services
2
530 - Physics
2
610 - Medicine & health
2
770 - Photography, photographs & computer art
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
340 - Law
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1
791 - Public performances
1