sponsored by the United Nations Institute for Training and Research (UNITAR), Alberta (Canada) Oil Sands Technology and Research Authority (AOSTRA), and the United States Department of Energy, in cooperation with the Government of Venezuela ... [et al.] ; R. F. Meyer and C. T. Steele, editors, J. C. Olson, assistant editorMining Informational Services, McGraw-Hillc1981
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based on a symposium sponsored by the Division of Fuel Chemistry at the second Chemical Congress of the North American Continent, Las Vegas, Nevada, August 25-29, 1980 ; H.C. Stauffer, editorAmerican Chemical Society1981
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