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