1972. 2012-12-18T20:30:06Z. 2013-03-18T22:31:59Z. Van Horn, Richard, 1920-. U.S. Geological Survey. English. Public. Utah and Salt Lake County.
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1972. 2013-02-21T16:38:28Z. 2013-03-18T20:56:37Z. Maberry, John O., 1935-. Geological Survey. English. Public. Colorado, Arapahoe County, and Douglas County.
1972. 2012-10-31T13:33:21Z. 2022-12-08T04:41:00Z. Williams, Paul L. (Paul Lincoln), 1932-. The Survey. English. Public. Utah.
1972. 2013-04-23T15:23:31Z. 2013-05-02T15:46:50Z. Scott, Glenn Robert, 1918-. United States Geological Survey. English. Public. Colorado and Jefferson County.