Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
580 - Plants (Botany)
610 - Medicine & health
8
700 - The arts; fine & decorative arts
7
363 - Other social problems & services
5
333 - Economics of land & energy
4
380 - Commerce, communications & transportation
4
576 - Genetics & evolution
4
581 - Specific topics in natural history
4
612 - Human physiology
4
300 - Social sciences
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
3
551 - Geology, hydrology & meteorology
3
620 - Engineering & allied operations
3
304 - Factors affecting social behavior
2
800 - Literature & rhetoric
2
900 - History & geography
1