Classification
140 - Specific philosophical schools
900 - History & geography
700 - The arts; fine & decorative arts
14
600 - Technology
11
380 - Commerce, communications & transportation
10
300 - Social sciences
8
620 - Engineering & allied operations
8
320 - Political science
7
330 - Economics
7
576 - Genetics & evolution
7
000 - Computer science, information & general works
6
370 - Education
6
333 - Economics of land & energy
5
363 - Other social problems & services
5
800 - Literature & rhetoric
5
100 - Philosophy & psychology
4
610 - Medicine & health
4
301 - Sociology & anthropology
3
340 - Law
3
200 - Religion
2
304 - Factors affecting social behavior
2
400 - Language
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
780 - Music
2
170 - Ethics
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1
791 - Public performances
1