Classification
551 - Geology, hydrology & meteorology
580 - Plants (Botany)
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
363 - Other social problems & services
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
658 - General management
1
720 - Architecture
1
900 - History & geography
1