Classification
600 - Technology
7
333 - Economics of land & energy
4
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
330 - Economics
3
900 - History & geography
3
140 - Specific philosophical schools
2
320 - Political science
2
363 - Other social problems & services
2
530 - Physics
2
370 - Education
1
551 - Geology, hydrology & meteorology
1