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