Classification
580 - Plants (Botany)
8
000 - Computer science, information & general works
5
700 - The arts; fine & decorative arts
5
140 - Specific philosophical schools
3
600 - Technology
3
620 - Engineering & allied operations
3
576 - Genetics & evolution
2
610 - Medicine & health
2
333 - Economics of land & energy
1
363 - Other social problems & services
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
900 - History & geography
1