Classification
000 - Computer science, information & general works
4
700 - The arts; fine & decorative arts
4
800 - Literature & rhetoric
4
140 - Specific philosophical schools
3
610 - Medicine & health
3
304 - Factors affecting social behavior
2
363 - Other social problems & services
2
580 - Plants (Botany)
2
600 - Technology
2
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
615 - Pharmacology & therapeutics
1