Classification
700 - The arts; fine & decorative arts
610 - Medicine & health
69
140 - Specific philosophical schools
19
333 - Economics of land & energy
19
363 - Other social problems & services
18
000 - Computer science, information & general works
17
380 - Commerce, communications & transportation
13
576 - Genetics & evolution
12
580 - Plants (Botany)
12
330 - Economics
11
551 - Geology, hydrology & meteorology
10
600 - Technology
8
620 - Engineering & allied operations
8
370 - Education
7
500 - Natural sciences & mathematics
6
581 - Specific topics in natural history
6
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
900 - History & geography
5
300 - Social sciences
4
612 - Human physiology
4
320 - Political science
3
340 - Law
3
615 - Pharmacology & therapeutics
3
170 - Ethics
2
304 - Factors affecting social behavior
2
400 - Language
2
100 - Philosophy & psychology
1
530 - Physics
1
590 - Animals (Zoology)
1
720 - Architecture
1
800 - Literature & rhetoric
1