Classification
540 - Chemistry & allied sciences
700 - The arts; fine & decorative arts
7
000 - Computer science, information & general works
4
333 - Economics of land & energy
3
370 - Education
3
530 - Physics
3
600 - Technology
3
900 - History & geography
3
140 - Specific philosophical schools
2
300 - Social sciences
2
363 - Other social problems & services
2
500 - Natural sciences & mathematics
2
620 - Engineering & allied operations
2
720 - Architecture
2
100 - Philosophy & psychology
1
320 - Political science
1
330 - Economics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1
658 - General management
1