Classification
100 - Philosophy & psychology
300 - Social sciences
370 - Education
320 - Political science
13
900 - History & geography
8
304 - Factors affecting social behavior
6
330 - Economics
6
700 - The arts; fine & decorative arts
5
333 - Economics of land & energy
4
600 - Technology
4
140 - Specific philosophical schools
3
301 - Sociology & anthropology
3
340 - Law
3
400 - Language
3
200 - Religion
2
380 - Commerce, communications & transportation
2
620 - Engineering & allied operations
2
770 - Photography, photographs & computer art
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
610 - Medicine & health
1
658 - General management
1
800 - Literature & rhetoric
1