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By: DeVelice, Robert L. - Lesica, Peter. - Montana Natural Heritage Program. - United States. Bureau of Land Management. - United States. Bureau of Land Management. Montana State Office.Edition:Publication info: Helena, Mt, Montana Natural Heritage Program, c1993Volume: 1993Series:Holding Institution: Montana State LibrarySubjects: Botany Carbon County Classification Montana Plant communities Pryor Counties Pryor Mountains (Mont. and Wyo.) Vegetation classificationBHL Collections: