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  Geologic Formations: Marcellus Formation, History of the Rove Formation ... - Books, LLC - Google Books

  http://books.google.de/books/about/Geologic_Formations.html?id=pnqUSQAACAAJ&redir_esc=y

  Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 118. Chapters: Marcellus Formation, History of the Rove Formation, Dimension stone, List of fossil sites, Bimini Road,…

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  Category:Roads in Pennsylvania – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Roads_in_Pennsylvania?uselang=de

  Keine Beschreibung vorhanden.

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