Renewable energy development : hearings before the Subcommittee on Energy Research and Development of the Committee on Science, Space and Technology, House of Representatives, one hundredth Congress, first session, July 8, 9, 1987.
United States.Congress.House.Committee on Science, Space, and Technology.Subcommittee on Energy Research and Development.
Washington : U.S.G.P.O.,
1987.
Renewable energy sources