Classification
300 - Social sciences
320 - Political science
11
330 - Economics
10
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
301 - Sociology & anthropology
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
720 - Architecture
1