1973. 2012-11-30T21:06:37Z. 2017-08-18T13:10:28Z. Cooper, John R. (John Roberts), 1907-. U.S. Geological Survey. English. Public. Arizona and Pima County.
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1973. 2013-05-22T15:29:03Z. 2013-06-13T15:35:34Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Arizona and Pima County.