Classification
320 - Political science
610 - Medicine & health
700 - The arts; fine & decorative arts
330 - Economics
12
363 - Other social problems & services
12
140 - Specific philosophical schools
11
000 - Computer science, information & general works
9
333 - Economics of land & energy
9
551 - Geology, hydrology & meteorology
5
581 - Specific topics in natural history
5
304 - Factors affecting social behavior
4
340 - Law
4
900 - History & geography
4
380 - Commerce, communications & transportation
3
580 - Plants (Botany)
3
600 - Technology
3
630 - Agriculture & related technologies
3
360 - Social problems & services; associations
2
370 - Education
2
550 - Earth sciences
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
302 - Social interaction
1
361 - Social problems & social welfare in general
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
658 - General management
1
720 - Architecture
1