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