Classification
330 - Economics
4
320 - Political science
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
200 - Religion
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
610 - Medicine & health
1
657 - Accounting
1
900 - History & geography
1