1959. 2012-09-05T18:59:13Z. 2013-03-18T22:16:33Z. Marshall, C. H. U.S. Geological Survey. English. Public. Colorado, Montrose County, and Delta County.
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1959. 2012-09-05T19:07:21Z. 2013-03-18T22:16:33Z. Marshall, C. H. U.S. Geological Survey. English. Public. Colorado, Montrose County, Ouray County, and U.S.