Classification
300 - Social sciences
370 - Education
3
530 - Physics
600 - Technology
100 - Philosophy & psychology
2
320 - Political science
2
330 - Economics
2
500 - Natural sciences & mathematics
2
540 - Chemistry & allied sciences
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
658 - General management
1
720 - Architecture
1
780 - Music
1