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WHAT

  1. Mining (1)

WHERE

  1. United States (1)

WHO

  1. Bien, Julius (1)
  2. Hitchcock, Charles H. (Ch … (1)
  3. U.S. (1)
  4. United States. Census Off … (1)
  5. Walker, Francis Amasa, 18 … (1)

WHEN

  1. 1874 (1)
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Browse All : Atlas Map and Data Visualization and Statistical and Statistical Atlas of Pennsylvania

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Coal fields US.  
Hitchcock, Charles H. (...
Coal fields US.
1874
Statistical Atlas
Author
[Hitchcock, Charles H. (Charles Henry), 1836-1919, United States. Census Office, Walker, Francis Amasa, 1840-1897]
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