Classification
000 - Computer science, information & general works
2
304 - Factors affecting social behavior
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
581 - Specific topics in natural history
610 - Medicine & health
2
140 - Specific philosophical schools
1
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
1
364 - Criminology
1
551 - Geology, hydrology & meteorology
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1
900 - History & geography
1