Classification
414 - Phonology & phonetics
600 - Technology
610 - Medicine & health
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
5
900 - History & geography
4
333 - Economics of land & energy
3
580 - Plants (Botany)
3
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
363 - Other social problems & services
1
630 - Agriculture & related technologies
1
720 - Architecture
1