Oil shale : the environmental challenges III : proceedings of an international symposium, August 9-12, 1982, Vail, Colorado / edited by Kathy Kellogg Petersen ; sponsored by the Oil Shale Task Force through the U.S. Department of Energy.
Oil shale : the environmental challenges III : proceedings of an international symposium, August 9-12, 1982, Vail, Colorado / edited by Kathy Kellogg Petersen ; sponsored by the Oil Shale Task Force through the U.S. Department of Energy.