GUFFEY, F.D.// HOLPER, P.A.// HUNTER, D.E. (USDOE MORGANTOWN ENERGY TECHNOLOGY CENTER, WV (UNITED STATES)// UNIVERSITY OF WYOMING RESEARCH CORP., LARAMIE, WY (UNITED STATES). WESTERN RESEARCH INST.)United States. Dept. of Energy(United States. Dept. of Energy)1991.