Direct combustion of coal : hearing before the Subcommittee on Energy Development and Applications of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, first session, December 10, 1981
United States.Congress.House.Committee on Science and Technology.Subcommittee on Energy Development and Applications.
Washington U.S.G.P.O.
1982
No. 97-69
Coal