Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
580 - Plants (Botany)
2
363 - Other social problems & services
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
612 - Human physiology
1
630 - Agriculture & related technologies
1