Classification
610 - Medicine & health
13
700 - The arts; fine & decorative arts
9
000 - Computer science, information & general works
7
140 - Specific philosophical schools
5
333 - Economics of land & energy
4
414 - Phonology & phonetics
3
540 - Chemistry & allied sciences
3
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
600 - Technology
2
330 - Economics
1
361 - Social problems & social welfare in general
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1