Classification
330 - Economics
340 - Law
370 - Education
320 - Political science
31
300 - Social sciences
10
900 - History & geography
10
700 - The arts; fine & decorative arts
9
600 - Technology
8
140 - Specific philosophical schools
7
200 - Religion
7
000 - Computer science, information & general works
5
363 - Other social problems & services
5
620 - Engineering & allied operations
5
100 - Philosophy & psychology
4
333 - Economics of land & energy
4
380 - Commerce, communications & transportation
4
400 - Language
4
301 - Sociology & anthropology
3
410 - Linguistics
3
170 - Ethics
2
304 - Factors affecting social behavior
2
500 - Natural sciences & mathematics
2
658 - General management
2
364 - Criminology
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
610 - Medicine & health
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1