Classification
140 - Specific philosophical schools
610 - Medicine & health
000 - Computer science, information & general works
15
700 - The arts; fine & decorative arts
13
580 - Plants (Botany)
11
304 - Factors affecting social behavior
9
540 - Chemistry & allied sciences
7
333 - Economics of land & energy
5
363 - Other social problems & services
4
800 - Literature & rhetoric
4
600 - Technology
3
615 - Pharmacology & therapeutics
3
330 - Economics
2
170 - Ethics
1
340 - Law
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
900 - History & geography
1