Preservation of natural diversity : hearing before the Subcommittee on National Parks and Insular Affairs of the Committee on Interior and Insular Affairs, House of Representatives, Ninety-fifth Congress, first session on H.R. 8650 ... held in Washington, D.C., August 2, 1977.
United States.Congress.House.Committee on Interior and Insular Affairs.Subcommittee on National Parks and Insular Affairs.
Washington : U.S. Govt. Print. Off.,
1979.
"Serial no. 95-36."
Natural areas
Natural resources
Landscape protection