Classification
620 - Engineering & allied operations
600 - Technology
7
900 - History & geography
6
700 - The arts; fine & decorative arts
5
363 - Other social problems & services
4
000 - Computer science, information & general works
3
658 - General management
3
330 - Economics
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
580 - Plants (Botany)
2
410 - Linguistics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1