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Degasification of the Mary Lee Coalbed Near Oak Grove, Jefferson County, Ala
Curtis H. ElderMaurice Deul
其他書名
By Vertical Borehole in Advance of Mining
出版U.S. Bureau of Mines, 1974
URLhttp://books.google.com.hk/books?id=0HU_NWeVhcwC&hl=&source=gbs_api
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