Classification
333 - Economics of land & energy
530 - Physics
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
5
600 - Technology
4
620 - Engineering & allied operations
4
900 - History & geography
3
330 - Economics
2
551 - Geology, hydrology & meteorology
2
800 - Literature & rhetoric
2
320 - Political science
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
610 - Medicine & health
1