Wilderness Preservation System. :
hearings before the United States House Committee on Interior and Insular Affairs, Subcommittee on Public Lands, Eighty-Seventh Congress, first session, Eighty-Seventh Congress, second session.

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Item Link Original Source
Full view   pt.1 University of Minnesota
Full view   pt.1-4 University of Minnesota
Full view   pt.2 University of Minnesota
Full view   pt.3 University of Minnesota
Full view   pt.4 University of Minnesota