Bilaketaren emaitzak - "Anthracite coal mines and mining Pennsylvania"

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    Anthracite's demise and the post-coal economy of Northeastern Pennsylvania / nork Keil, Thomas J., Keil, Jacqueline M.

    Argitaratua 2015
    Gaiak: “...Anthracite coal mines and mining Pennsylvania History....”
    An electronic book accessible through the World Wide Web; click to view
    Baliabide elektronikoa eBook