TY - GEN AU - Leu,J.C. AU - ED - United States. TI - Methanation feed gas carbon dioxide level : final report / \ J.C. Leu U1 - US 665.776 23rd ed. PY - 1977/// CY - Washington PB - U.S. Department of Energy KW - Methanation KW - Coal gasification KW - Carbon dioxide N1 - On cover: Fossil energy. "FE-2240-45." Series no. I:E-6. Prepared for the U.S. Dept. of Energy and Gas Research Institute under contract no. EX-76-C-01-2240 ER -