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By: Vance, Linda K. (Katherine) - Montana Natural Heritage Program. - Montana. Department of Environmental Quality - United States. Environmental Protection Agency.Edition:Publication info: Helena, Mont, Montana Natural Heritage Program, c2009Volume: 2009Series:Holding Institution: Montana State LibrarySubjects: Ephemeral streams Federal Water Pollution Control Act Montana Prairie Pothole Region (Mont.) United States Wetland ecology WetlandsBHL Collections: