Guayule rubber development : Hearing before the Subcommittee on Regional and Community Development of the Committee on Environment and Public Works, United States Senate, Ninety-fifth Congress, second session, on S. 1816 a bill to amend the Public Works and Economic Development Act of 1965 to authorize a program of research, development, and demonstration of Guayule Rubber production and manufacture as an economic development opportunity for the South-Western states, March 1, 1978.