Classification
000 - Computer science, information & general works
333 - Economics of land & energy
4
551 - Geology, hydrology & meteorology
600 - Technology
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
330 - Economics
2
363 - Other social problems & services
2
530 - Physics
2
620 - Engineering & allied operations
2
900 - History & geography
2
297 - Islam, Babism & Bahai Faith
1
320 - Political science
1
610 - Medicine & health
1