Classification
610 - Medicine & health
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
600 - Technology
2
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
800 - Literature & rhetoric
1