Classification
610 - Medicine & health
35
580 - Plants (Botany)
21
700 - The arts; fine & decorative arts
16
000 - Computer science, information & general works
12
615 - Pharmacology & therapeutics
11
140 - Specific philosophical schools
9
600 - Technology
8
540 - Chemistry & allied sciences
6
900 - History & geography
5
333 - Economics of land & energy
4
630 - Agriculture & related technologies
4
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
620 - Engineering & allied operations
3
304 - Factors affecting social behavior
2
330 - Economics
2
363 - Other social problems & services
2
576 - Genetics & evolution
2
612 - Human physiology
2
100 - Philosophy & psychology
1
370 - Education
1
570 - Life sciences; biology
1
613 - Personal health & safety
1
658 - General management
1
800 - Literature & rhetoric
1