Classification
304 - Factors affecting social behavior
330 - Economics
363 - Other social problems & services
380 - Commerce, communications & transportation
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1