Bilaketaren emaitzak - "Anthracite coal mines and mining Pennsylvania"
Proposatutako topikoa bilaketarako iradokizunak
Proposatutako topikoa bilaketarako iradokizunak
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Anthracite's demise and the post-coal economy of Northeastern Pennsylvania /
Argitaratua 2015Gaiak: “...Anthracite coal mines and mining Pennsylvania History....”
An electronic book accessible through the World Wide Web; click to view
Baliabide elektronikoa eBook