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  1. 1

    Coal

    Published 2007
    Book
  2. 2

    Basic mathematics and computer techniques for coal preparation and mining

    Published 1983
    Book
  3. 3

    Coal mine safety

    Published 2009
    NetLibrary
    Electronic eBook
  4. 4

    Gulag town, company town forced labor and its legacy in Vorkuta by Barenberg, Alan

    Published 2014
    Book