Classification
550 - Earth sciences
910 - Geography & travel
34
526 - Mathematical geography
6
551 - Geology, hydrology & meteorology
2
000 - Computer science, information & general works
1
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1