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By: Hendricks, Paul. - Kudray, Gregory M. - Lenard, Susan. - Maxell, Bryce A. (Bryce Alan) - Montana Natural Heritage Program.Edition:Publication info: Helena, Mont, Montana Natural Heritage Program, c2007Volume: 2007Series:Holding Institution: Montana State LibrarySubjects: Big Horn County Bird populations Carter County Custer County Grassland birds Montana Plants Powder River Basin Ecological Section Prairie CountyBHL Collections: