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- [5] COAL-LIQUEFACTION ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1980, 180 (AUG): : 34 - CHED
- [6] COAL-LIQUEFACTION TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1985, 71 (02): : 157 - 163
- [8] SOME ASPECTS OF RESEARCH ON COAL-LIQUEFACTION IN ALBERTA CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1980, 58 (06): : 687 - 692