Classification
320 - Political science
330 - Economics
380 - Commerce, communications & transportation
333 - Economics of land & energy
12
363 - Other social problems & services
10
700 - The arts; fine & decorative arts
10
000 - Computer science, information & general works
8
100 - Philosophy & psychology
7
900 - History & geography
7
576 - Genetics & evolution
6
600 - Technology
6
340 - Law
5
610 - Medicine & health
5
300 - Social sciences
4
410 - Linguistics
4
551 - Geology, hydrology & meteorology
4
800 - Literature & rhetoric
4
140 - Specific philosophical schools
3
200 - Religion
3
304 - Factors affecting social behavior
3
370 - Education
3
720 - Architecture
3
350 - Public administration & military science
2
400 - Language
2
620 - Engineering & allied operations
2
170 - Ethics
1
336 - Public finance
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
581 - Specific topics in natural history
1
658 - General management
1
780 - Music
1