Classification
320 - Political science
700 - The arts; fine & decorative arts
10
330 - Economics
9
900 - History & geography
9
333 - Economics of land & energy
7
304 - Factors affecting social behavior
6
600 - Technology
6
363 - Other social problems & services
5
370 - Education
5
140 - Specific philosophical schools
4
340 - Law
4
100 - Philosophy & psychology
3
300 - Social sciences
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
620 - Engineering & allied operations
3
000 - Computer science, information & general works
2
200 - Religion
2
530 - Physics
2
610 - Medicine & health
2
170 - Ethics
1
360 - Social problems & services; associations
1
364 - Criminology
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
720 - Architecture
1