sponsored by UNITAR/UNDP Information Centre for Heavy Crude and Tar Sands and Alberta Oil Sands Technology and research authority ; in cooperation with Petroleos de Venezuela S.A., The United States Department of Energy and Petro-Canada Inc.; Richard F. meyer, Emest J. Wiggins editors
Alberta Oil Sands Technology and Resarch Authority, 1989
set , v. 1 , v. 2 , v. 3 , v. 4 , v. 5
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