Classification
333 - Economics of land & energy
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
580 - Plants (Botany)
2
363 - Other social problems & services
1
530 - Physics
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
658 - General management
1
900 - History & geography
1