The benefits and challenges of producing liquid fuel from coal : the role for federal research : hearing before the Subcommittee on Energy and Environment, Committee on Science and Technology, House of Representatives, One Hundred Tenth Congress, first session, September 5, 2007.
Washington, D.C. : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2008.