Classification
610 - Medicine & health
700 - The arts; fine & decorative arts
14
000 - Computer science, information & general works
12
333 - Economics of land & energy
12
140 - Specific philosophical schools
9
363 - Other social problems & services
8
580 - Plants (Botany)
8
380 - Commerce, communications & transportation
7
600 - Technology
6
414 - Phonology & phonetics
5
540 - Chemistry & allied sciences
5
581 - Specific topics in natural history
5
612 - Human physiology
5
620 - Engineering & allied operations
5
500 - Natural sciences & mathematics
4
300 - Social sciences
3
304 - Factors affecting social behavior
3
330 - Economics
3
370 - Education
3
400 - Language
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
170 - Ethics
1
200 - Religion
1
615 - Pharmacology & therapeutics
1
658 - General management
1
720 - Architecture
1