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"Coal gasification" » "Coal classification" (Expand Search), "Coal justification" (Expand Search), "Coal purification" (Expand Search)
"Coal gasification" » "Coal classification" (Expand Search), "Coal justification" (Expand Search), "Coal purification" (Expand Search)
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1Published 1978Subjects: “...Coal gasification Pennsylvania South Park (Township)...”
Government Document Book -
2by Thomas, W. C. (William Charles), 1951-Subjects: “...Coal gasification Environmental aspects Pennsylvania....”
Published 1979
Government Document Book -
3Published 1974Subjects: “...Coal gasification plants Pennsylvania....”
Government Document Microform Book