Classification
540 - Chemistry & allied sciences
000 - Computer science, information & general works
11
610 - Medicine & health
9
333 - Economics of land & energy
8
600 - Technology
7
700 - The arts; fine & decorative arts
7
330 - Economics
5
580 - Plants (Botany)
5
630 - Agriculture & related technologies
4
363 - Other social problems & services
3
620 - Engineering & allied operations
3
304 - Factors affecting social behavior
2
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
615 - Pharmacology & therapeutics
2
530 - Physics
1
551 - Geology, hydrology & meteorology
1
612 - Human physiology
1
657 - Accounting
1
900 - History & geography
1