Classification
610 - Medicine & health
17
700 - The arts; fine & decorative arts
8
000 - Computer science, information & general works
7
140 - Specific philosophical schools
5
580 - Plants (Botany)
4
333 - Economics of land & energy
3
600 - Technology
3
615 - Pharmacology & therapeutics
3
330 - Economics
2
363 - Other social problems & services
2
540 - Chemistry & allied sciences
2
581 - Specific topics in natural history
2
612 - Human physiology
2
620 - Engineering & allied operations
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
200 - Religion
1
320 - Political science
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
900 - History & geography
1