Classification
610 - Medicine & health
612 - Human physiology
700 - The arts; fine & decorative arts
9
333 - Economics of land & energy
8
000 - Computer science, information & general works
7
140 - Specific philosophical schools
5
100 - Philosophy & psychology
3
380 - Commerce, communications & transportation
3
576 - Genetics & evolution
3
330 - Economics
2
363 - Other social problems & services
2
580 - Plants (Botany)
2
304 - Factors affecting social behavior
1
370 - Education
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
800 - Literature & rhetoric
1