Classification
140 - Specific philosophical schools
700 - The arts; fine & decorative arts
610 - Medicine & health
21
000 - Computer science, information & general works
17
580 - Plants (Botany)
11
333 - Economics of land & energy
8
540 - Chemistry & allied sciences
8
363 - Other social problems & services
6
414 - Phonology & phonetics
6
380 - Commerce, communications & transportation
5
304 - Factors affecting social behavior
4
576 - Genetics & evolution
4
581 - Specific topics in natural history
4
615 - Pharmacology & therapeutics
4
800 - Literature & rhetoric
4
300 - Social sciences
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
600 - Technology
3
612 - Human physiology
3
620 - Engineering & allied operations
3
330 - Economics
2
340 - Law
1