7 L Ranch Quadrangle

Citation

Geological Survey (U.S.). 7 L Ranch Quadrangle, Map, 1991; digital image, (http://texashistory.unt.edu/ark:/67531/metapth107464/ : accessed August 20, 2014), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting UNT Libraries Government Documents Department, Denton, Texas.

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