Classification
380 - Commerce, communications & transportation
610 - Medicine & health
700 - The arts; fine & decorative arts
19
000 - Computer science, information & general works
13
140 - Specific philosophical schools
12
333 - Economics of land & energy
12
363 - Other social problems & services
10
540 - Chemistry & allied sciences
8
580 - Plants (Botany)
8
620 - Engineering & allied operations
7
612 - Human physiology
6
576 - Genetics & evolution
5
551 - Geology, hydrology & meteorology
4
615 - Pharmacology & therapeutics
4
300 - Social sciences
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
581 - Specific topics in natural history
3
600 - Technology
3
304 - Factors affecting social behavior
2
320 - Political science
1
330 - Economics
1
370 - Education
1
400 - Language
1
630 - Agriculture & related technologies
1
658 - General management
1
900 - History & geography
1