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North Dakota Lignite as a Fuel for Power-plant Boilers

Alfred Holmes WhiteArthur W. BeldenDwight T. RandallHorace Chamberlain PorterJohn Kay ClementRichard George Gottlob MoldenkeRobert Heywood FernaldWalter T. RayFrank Keehn OvitzHenry KreisingerLeason Herberling AdamsCharles Nelson Haskins

出版	U.S. Government Printing Office, 1910
URL	http://books.google.com.hk/books?id=2ZdIAQAAMAAJ&hl=&source=gbs_api