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