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Chemical Analyses of Coal and Coal-associated Rock Samples from the Coalmont Formation, McCallum and Coalmont Areas, North Park, Jackson County, Colorado

Joseph R. HatchDawn Hill MaddenRonald H. Affolter

出版	U.S. Geological Survey, 1979
URL	http://books.google.com.hk/books?id=m8BeGwAACAAJ&hl=&source=gbs_api