1956. 2012-08-10T20:20:23Z. 2013-03-18T20:17:38Z. Marshall, C. H. U.S. Geological Survey. English. Public. Arizona and Mohave County.
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1956. 2012-08-10T15:35:15Z. 2013-03-18T22:11:08Z. Pillmore, C. L., 1930-. U.S. Geological Survey. English. Public. Utah, Kane County, Washington County, Arizona, and Mohave County.
1956. 2012-08-20T17:41:15Z. 2013-03-18T22:13:19Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Utah, Washington County, Arizona, and Mohave County.