Classification
000 - Computer science, information & general works
1
304 - Factors affecting social behavior
1
363 - Other social problems & services
364 - Criminology
380 - Commerce, communications & transportation
551 - Geology, hydrology & meteorology
576 - Genetics & evolution
581 - Specific topics in natural history
1
610 - Medicine & health
1
800 - Literature & rhetoric
1
900 - History & geography