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Surface Water Supply of the United States, 1915. Part IX: Colorado River Basin. Nathan C. Grover, Chief Hydraulic Engineer, Robert Follansbee, E.A. Porter, and C.C. Jacob, District Engineers. [U.S. Geological Survey Water Supply Paper 409.].

United States. Congress. House

出版	1917
URL	http://books.google.com.hk/books?id=OI2HzQEACAAJ&hl=&source=gbs_api