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- [29] SHORT TIME REACTION-PRODUCTS OF COAL LIQUEFACTION AND THEIR RELEVANCE TO THE STRUCTURE OF COAL ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1979, (APR): : 30 - &
- [30] MASS-SPECTROMETRIC ANALYSIS OF HETEROCOMPOUNDS IN COAL EXTRACTS AND COAL LIQUEFACTION PRODUCTS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1977, 174 (SEP): : 2 - 2