1956. 2012-08-09T14:04:15Z. 2013-03-18T22:10:19Z. Hemphill, William R. (William Ross), 1930-. U.S. Geological Survey. English. Public. Utah and Emery County.
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1956. 2012-08-10T15:42:08Z. 2013-03-18T22:11:08Z. Hemphill, William R. (William Ross), 1930-. The Survey. English. Public. Arizona and Mohave County.