Classification
630 - Agriculture & related technologies
580 - Plants (Botany)
5
612 - Human physiology
5
600 - Technology
3
620 - Engineering & allied operations
3
363 - Other social problems & services
2
900 - History & geography
2
000 - Computer science, information & general works
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1