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Hydrology and the Hypothetical Effects of Reducing Nutrient Applications of Water Quality in the Bald Eagle Creek Headwaters, Southeastern Pennsylvania Prior to Implementation of Agricultural Best-management Practices

David K. FishelMichael J. LanglandMark V. Truhlar

出版	U.S. Department of the Interior, U.S. Geological Survey, 1991
URL	http://books.google.com.hk/books?id=QH076j3aZ2QC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN