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1956. 2018-04-24T17:49:44Z. 2018-04-24T17:49:44Z. Vine, James David, 1921-. Geological Survey. English. cartographic image. Public. Montana and Montana.
1956. 2012-08-17T14:53:10Z. 2013-03-18T20:19:12Z. Hackman, Robert J. Geological Survey. English. Public. Colorado, Montrose County, Utah, and San Juan County.
1956. 2012-08-15T14:21:43Z. 2013-03-18T22:12:15Z. Hackman, Robert J. Geological Survey. English. Public. Utah, San Juan County, Colorado, Montrose County, and San Miguel County.