Classification
320 - Political science
380 - Commerce, communications & transportation
610 - Medicine & health
700 - The arts; fine & decorative arts
333 - Economics of land & energy
12
363 - Other social problems & services
11
000 - Computer science, information & general works
10
600 - Technology
10
330 - Economics
8
551 - Geology, hydrology & meteorology
8
900 - History & geography
7
140 - Specific philosophical schools
6
370 - Education
6
720 - Architecture
6
304 - Factors affecting social behavior
3
620 - Engineering & allied operations
3
340 - Law
2
400 - Language
2
576 - Genetics & evolution
2
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
410 - Linguistics
1
414 - Phonology & phonetics
1
550 - Earth sciences
1
581 - Specific topics in natural history
1
658 - General management
1