Classification
540 - Chemistry & allied sciences
580 - Plants (Botany)
610 - Medicine & health
700 - The arts; fine & decorative arts
28
000 - Computer science, information & general works
24
140 - Specific philosophical schools
12
333 - Economics of land & energy
11
363 - Other social problems & services
8
380 - Commerce, communications & transportation
7
612 - Human physiology
7
576 - Genetics & evolution
5
620 - Engineering & allied operations
5
414 - Phonology & phonetics
4
581 - Specific topics in natural history
4
300 - Social sciences
3
304 - Factors affecting social behavior
3
330 - Economics
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
600 - Technology
3
900 - History & geography
3
615 - Pharmacology & therapeutics
2
370 - Education
1
530 - Physics
1
720 - Architecture
1