Classification
610 - Medicine & health
63
140 - Specific philosophical schools
12
700 - The arts; fine & decorative arts
11
580 - Plants (Botany)
9
570 - Life sciences; biology
8
000 - Computer science, information & general works
7
333 - Economics of land & energy
5
576 - Genetics & evolution
4
330 - Economics
3
304 - Factors affecting social behavior
2
363 - Other social problems & services
2
540 - Chemistry & allied sciences
2
600 - Technology
2
370 - Education
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1