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Experiment in Underground Gasification of Coal, Gorgas, Ala

James J. DowdJames L. ElderJ. P. CappPaul Cohen

出版	U.S. Department of the Interior, Bureau of Mines., 1947
URL	http://books.google.com.hk/books?id=OwpS9w26rRgC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN