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"Coal mines and mining Pennsylvania Armstrong County" » "Coal lines and mining Pennsylvania Armstrong County" (Expand Search)
Showing 1 - 2 results of 2 for search '"Coal mines and mining Pennsylvania Armstrong County"', query time: 0.20s Refine Results
  1. 1
    by Kertis, Carla A.
    Published 1985
    Subjects: ...Coal mines and mining Pennsylvania Armstrong County Safety measures....
    Government Document Book
  2. 2
    by Kertis, Carla A.
    Published 1985
    Subjects: ...Coal mines and mining Pennsylvania Armstrong County Safety measures....
    Get full text
    Government Document Book
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