Classification
580 - Plants (Botany)
3
600 - Technology
3
620 - Engineering & allied operations
630 - Agriculture & related technologies
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
610 - Medicine & health
2
363 - Other social problems & services
1
770 - Photography, photographs & computer art
1