Classification
580 - Plants (Botany)
610 - Medicine & health
9
140 - Specific philosophical schools
7
000 - Computer science, information & general works
6
700 - The arts; fine & decorative arts
6
304 - Factors affecting social behavior
3
540 - Chemistry & allied sciences
3
800 - Literature & rhetoric
3
333 - Economics of land & energy
2
363 - Other social problems & services
2
615 - Pharmacology & therapeutics
2
630 - Agriculture & related technologies
2
330 - Economics
1
380 - Commerce, communications & transportation
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
658 - General management
1
900 - History & geography
1