Classification
320 - Political science
340 - Law
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
600 - Technology
2
610 - Medicine & health
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
581 - Specific topics in natural history
1