Fillo, John P. Ananlysis of RA-21 effluent data : GFERC slagging fixed bed gasifier / John P. Fillo, Michael J. Massey - Washington, D.C. : United States Department of Energy, 1978 - iv, 50 p. ; 26 cm. - Fossil energy ; FE2496-24 . Subjects--Topical Terms: Fossil fuelFossil energy Dewey Class. No.: 553.2