Classification
330 - Economics
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
370 - Education
380 - Commerce, communications & transportation
3
600 - Technology
3
610 - Medicine & health
700 - The arts; fine & decorative arts
3
900 - History & geography
320 - Political science
2
551 - Geology, hydrology & meteorology
2
720 - Architecture
2
000 - Computer science, information & general works
1
620 - Engineering & allied operations
1
658 - General management
1
800 - Literature & rhetoric
1