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  1. 1

    Radioactivity of coals and associated rocks in Beaver, Clearfield, and Jefferson counties, Pennsylvania by Ferm, John C., 1925-

    Published: The Survey : Available from the Office of Technical Services, Dept. of Commerce, 1955
    Description: 52 pages : illustrations, maps ; 26 cm.
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    Radioactivity of coals and associated rocks in Beaver, Clearfield, and Jefferson counties, Pennsylvania
  2. 2

    Carboniferous depositional environments in northeastern Kentucky : annual spring field conference, April 23-24, 1971 by Geological Society of Kentucky

    Published: Geological Society, 1971
    Description: viii, 30 pages : illustrations, maps ; 29 cm.
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    Carboniferous depositional environments in northeastern Kentucky : annual spring field conference, April 23-24, 1971
  3. 3

    The relation of geology to mine roof conditions in the Pocahontas No. 3 coalbed by Moebs, Noel N.

    Published: U.S. Dept. of the Interior, Bureau of Mines, 1982
    Description: 8 pages : illustrations ; 28 cm.
    Government Document Book
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    The relation of geology to mine roof conditions in the Pocahontas No. 3 coalbed
  4. 4

    Coal reserves of eastern Kentucky by Huddle, John Warfield, 1907-1975, Ferm, John C., 1925-, Lyons, E. J., Smith, H. L.

    Published: United States Department of the Interior, Geological Survey, 1963
    Description: 1 online resource (x, 247 pages, 16 pages of plates) : illustrations, maps, charts.
    Government Document eBook
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    Coal reserves of eastern Kentucky

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