Classification
330 - Economics
3
333 - Economics of land & energy
3
000 - Computer science, information & general works
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
900 - History & geography
2
320 - Political science
1
340 - Law
1
363 - Other social problems & services
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1