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Geology
7
Wyoming
5
Colorado
3
Minerals
3
Utah
3
Manuscripts as Topic
2
Military Medicine
2
Natural History
2
Silicon Dioxide
2
Calcium Carbonate
1
Cattle
1
Crotalus
1
Decapodiformes
1
Deer
1
Gadus morhua
1
Gout
1
Idaho
1
Oligochaeta
1
Railroads
1
Sheep, Domestic
1
