Classification
330 - Economics
340 - Law
370 - Education
620 - Engineering & allied operations
6
600 - Technology
5
300 - Social sciences
4
363 - Other social problems & services
4
380 - Commerce, communications & transportation
4
700 - The arts; fine & decorative arts
4
900 - History & geography
4
140 - Specific philosophical schools
3
320 - Political science
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
200 - Religion
2
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
400 - Language
2
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
610 - Medicine & health
1
658 - General management
1
720 - Architecture
1
780 - Music
1
800 - Literature & rhetoric
1