Classification
551 - Geology, hydrology & meteorology
800 - Literature & rhetoric
000 - Computer science, information & general works
6
700 - The arts; fine & decorative arts
6
363 - Other social problems & services
5
320 - Political science
4
330 - Economics
4
333 - Economics of land & energy
4
580 - Plants (Botany)
4
630 - Agriculture & related technologies
4
380 - Commerce, communications & transportation
3
610 - Medicine & health
3
500 - Natural sciences & mathematics
2
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
600 - Technology
1
620 - Engineering & allied operations
1
900 - History & geography
1