Classification
304 - Factors affecting social behavior
338 - Production
6
320 - Political science
4
333 - Economics of land & energy
4
330 - Economics
3
658 - General management
3
331 - Labor economics
2
363 - Other social problems & services
2
500 - Natural sciences & mathematics
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
332 - Financial economics
1
414 - Phonology & phonetics
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1