Classification
581 - Specific topics in natural history
610 - Medicine & health
9
580 - Plants (Botany)
7
700 - The arts; fine & decorative arts
6
000 - Computer science, information & general works
5
363 - Other social problems & services
5
540 - Chemistry & allied sciences
5
140 - Specific philosophical schools
4
333 - Economics of land & energy
4
500 - Natural sciences & mathematics
4
576 - Genetics & evolution
4
612 - Human physiology
4
300 - Social sciences
3
380 - Commerce, communications & transportation
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
600 - Technology
3
620 - Engineering & allied operations
3
615 - Pharmacology & therapeutics
2
304 - Factors affecting social behavior
1
320 - Political science
1
340 - Law
1
800 - Literature & rhetoric
1