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Mineral deposits of Central America / by Ralph J. Roberts and Earl M. Irving ; With a section on manganese deposits of Panama, by Frank S. Simons.

Ralph Jackson Roberts 1911-2007, author; Frank S Simons (Frank Stanton), 1917- -author; Earl M Irving (Earl Montgomery), 1911- -author; United States. International Cooperation Administration, issuing body.; Geological Survey (U.S.), issuing body.

Washington, D.C. : United States Department of the Interior, Geological Survey 1957

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