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Detailed Working Plan for Watershed Studies in the North Appalachian Region Relating to Water Conservation, Flood Control and Run-off as Influenced by Land Use and Methods of Erosion Control

Charles Ernest RamserD. B. Krimgold

出版	U.S. Department of Agriculture, Soil Conservation Service, 1935
URL	http://books.google.com.hk/books?id=nLvlavRX4acC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN