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By: Montana Natural Heritage Program - Montana State University (Bozeman, Mont.). Dept. of Biology. - United States. Bureau of Land Management. - United States. Bureau of Land Management. Great Falls Resource Area.Edition:Publication info: Bozeman, Mont, Montana State University, Department of Biology, 1991Volume:Series:Holding Institution: Bureau of Land ManagementSubjects: Birds of prey Conservation Environmental aspects Gas wells Habitat Kevin Rim Montana Natural gas Oil wells Petroleum Prospecting Toole CountyBHL Collections: