Classification
330 - Economics
363 - Other social problems & services
4
370 - Education
551 - Geology, hydrology & meteorology
320 - Political science
3
333 - Economics of land & energy
3
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
300 - Social sciences
1
340 - Law
1
400 - Language
1
550 - Earth sciences
1
610 - Medicine & health
1
900 - History & geography
1