共 50 条
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- [36] ENVIRONMENTAL ASSESSMENT OF AN UNDERGROUND COAL-GASIFICATION PROCESS IN SITU, 1979, 3 (02): : 168 - 169
- [38] THE FEDERAL-ROLE IN COAL-GASIFICATION RESEARCH AND DEVELOPMENT ACTIVITIES ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1980, 180 (AUG): : 28 - PETR
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