Classification
000 - Computer science, information & general works
580 - Plants (Botany)
700 - The arts; fine & decorative arts
5
610 - Medicine & health
4
600 - Technology
3
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
2
620 - Engineering & allied operations
2
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
615 - Pharmacology & therapeutics
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1
900 - History & geography
1