Classification
000 - Computer science, information & general works
363 - Other social problems & services
2
581 - Specific topics in natural history
330 - Economics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1