Classification
320 - Political science
340 - Law
900 - History & geography
300 - Social sciences
23
100 - Philosophy & psychology
19
700 - The arts; fine & decorative arts
10
140 - Specific philosophical schools
8
600 - Technology
7
330 - Economics
5
500 - Natural sciences & mathematics
5
576 - Genetics & evolution
5
301 - Sociology & anthropology
4
370 - Education
4
380 - Commerce, communications & transportation
4
620 - Engineering & allied operations
4
363 - Other social problems & services
3
720 - Architecture
3
120 - Epistemology, causation & humankind
2
170 - Ethics
2
304 - Factors affecting social behavior
2
364 - Criminology
2
000 - Computer science, information & general works
1
200 - Religion
1
333 - Economics of land & energy
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
400 - Language
1
530 - Physics
1
610 - Medicine & health
1
658 - General management
1
770 - Photography, photographs & computer art
1
791 - Public performances
1
800 - Literature & rhetoric
1