1906. 2013-03-14T15:24:03Z. 2013-03-14T15:24:03Z. Darton, Nelson Horatio, 1865-1948. The Survey. English. Public. Wyoming, Big Horn County, Johnson County, Sheridan County, and États-Unis.
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1988. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Montana, Daniels County, Roosevelt County, Sheridan County, and Fort Union Formation.
1986. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Branch of Distribution. English. Public. Montana, Big Horn County, Wyoming, and Sheridan County.