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- [3] LIQUEFACTION PATHWAYS OF UNITED-STATES COALS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1991, 201 : 62 - FUEL
- [5] PORPHYRINS OF UNITED-STATES HUMIC COALS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1980, 179 (MAR): : 15 - GEOC
- [8] CHARACTERIZATION OF TITANIUM IN SOME UNITED-STATES COALS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1986, 191 : 68 - INDE