Classification
000 - Computer science, information & general works
1
320 - Political science
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
380 - Commerce, communications & transportation
551 - Geology, hydrology & meteorology
1
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
1