Classification
000 - Computer science, information & general works
580 - Plants (Botany)
330 - Economics
3
600 - Technology
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
3
700 - The arts; fine & decorative arts
3
363 - Other social problems & services
2
414 - Phonology & phonetics
2
333 - Economics of land & energy
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1