TY  - BOOK
AU  - Sankey,B.M.
AU  - Clarke,G.G.
AU  - Clarke,G.G.
ED  - ESSO Petroleum Canada
ED  - World Petroleum Congress (12th : 1987 26 abr/1 may : Houston)
ED  - ESSO Petroleum Canada
TI  - Heavy oil upgrading as a function of raw material, geographic site and market demand
U1  - 060-665.5 W938 1987 
ER  -