Classification
304 - Factors affecting social behavior
320 - Political science
58
330 - Economics
333 - Economics of land & energy
58
610 - Medicine & health
57
370 - Education
16
363 - Other social problems & services
9
600 - Technology
5
336 - Public finance
4
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
658 - General management
1
700 - The arts; fine & decorative arts
1