Classification
330 - Economics
363 - Other social problems & services
610 - Medicine & health
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
320 - Political science
2
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
720 - Architecture
1
800 - Literature & rhetoric
1