1973. 2012-12-10T21:39:16Z. 2013-03-18T20:49:59Z. Peterson, Fred, 1933-. U.S. Geological Survey. English. Public. Utah, Kane County, San Juan County, Arizona, and Coconino County.
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1973. 2012-12-10T21:40:59Z. 2013-03-18T22:30:59Z. Peterson, Fred, 1933-. U.S. Geological Survey. English. Public. Utah, Kane County, San Juan County, Arizona, and Coconino County.
1973. 2012-11-30T21:06:37Z. 2017-08-18T13:10:28Z. Cooper, John R. (John Roberts), 1907-. U.S. Geological Survey. English. Public. Arizona and Pima County.
1973. 2012-11-29T21:49:03Z. 2023-02-09T21:27:15Z. Hackman, Robert J. U.S. Geological Survey. English. Public. Utah, Garfield County, Kane County, San Juan County, Arizona, Navajo County, and Coconino County.