Classification
320 - Political science
600 - Technology
5
620 - Engineering & allied operations
5
333 - Economics of land & energy
4
700 - The arts; fine & decorative arts
4
900 - History & geography
4
551 - Geology, hydrology & meteorology
3
000 - Computer science, information & general works
2
340 - Law
2
363 - Other social problems & services
2
330 - Economics
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
630 - Agriculture & related technologies
1