Estimates of average annual tributary inflow to the lower Colorado River, Hoover Dam to Mexico [map] / Department of the Interior, United States Geological Survey ; by Sandra J. Owen-Joyce ; prepared in cooperation with the U.S. Bureau of Reclamation
"Base from U.S. Geological Survey, Arizona, California, and Nevada, 1:500,000, 1969-78." Includes text, bibliography, 12 graphs, 3 tables, and index map. Shipping list no.: 87-710-P.
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