Classification
300 - Social sciences
581 - Specific topics in natural history
000 - Computer science, information & general works
2
320 - Political science
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
600 - Technology
2
620 - Engineering & allied operations
2
900 - History & geography
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
330 - Economics
1
350 - Public administration & military science
1
370 - Education
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1