Classification
700 - The arts; fine & decorative arts
610 - Medicine & health
4
320 - Political science
3
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
330 - Economics
1
370 - Education
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
900 - History & geography
1