Author: Hackman, Robert J. / Publisher: Geological Survey - Yale University Library GeoBlacklight Search Results

Start Over Author Hackman, Robert J. Publisher Geological Survey

1. Photogeologic map of the Mount Peale-1 quadrangle, San Juan County, Utah, and Montrose County, Colorado [cartographic material]

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.

2. Photogeologic map of the Mount Peale-9 quadrangle, San Juan County, Utah and Montrose and San Miguel Counties, Colorado [cartographic material]

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.

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