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