Classification
000 - Computer science, information & general works
2
304 - Factors affecting social behavior
320 - Political science
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
576 - Genetics & evolution
140 - Specific philosophical schools
1
330 - Economics
1
380 - Commerce, communications & transportation
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1