Classification
610 - Medicine & health
7
333 - Economics of land & energy
5
612 - Human physiology
4
000 - Computer science, information & general works
3
540 - Chemistry & allied sciences
3
580 - Plants (Botany)
3
380 - Commerce, communications & transportation
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
330 - Economics
1
576 - Genetics & evolution
1
615 - Pharmacology & therapeutics
1
800 - Literature & rhetoric
1