Great gray owl locations in the United States, 1993.

Citation

United States Forest Service, Rocky Mountain Region. Great gray owl locations in the United States, 1993., Map, 1993; (http://texashistory.unt.edu/ark:/67531/metapth220341/ : accessed December 26, 2014), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting University of Texas at Arlington Library, Arlington, Texas.

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