Economics of world resources : hearing before the Subcommittee on Commerce, Consumer Protection and Competitiveness of the Committee on Energy and Commerce, House of Representatives, one hundredth congress, first session, May 8, 1987.
United States.Congress.House.Committee on Energy and Commerce.Subcommittee on Commerce, Consumer Protection, and Competitiveness.
Washington : USGPO,
1987.
Serial no. 100-24
Natural resources