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Technology and Use of Lignite. Proceedings: Bureau of Mines-University of North Dakota Symposium, Grand Forks, N. Dak., April-May 1963. Compiled by Wayne R. Kube and James L. Elder

United States. Bureau of Mines. Symposium on Technology and Use of Lignite

出版	1964
URL	http://books.google.com.hk/books?id=xIL5MgEACAAJ&hl=&source=gbs_api