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