Classification
000 - Computer science, information & general works
304 - Factors affecting social behavior
1
330 - Economics
333 - Economics of land & energy
1
520 - Astronomy & allied sciences
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
600 - Technology
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1