Classification
610 - Medicine & health
6
700 - The arts; fine & decorative arts
4
140 - Specific philosophical schools
3
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
612 - Human physiology
3
615 - Pharmacology & therapeutics
3
000 - Computer science, information & general works
2
540 - Chemistry & allied sciences
2
363 - Other social problems & services
1
414 - Phonology & phonetics
1
576 - Genetics & evolution
1
800 - Literature & rhetoric
1