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Annual Report on the Geological Survey of the State of Pennsylvania
Language: en
Pages: 532
Authors: Geological Survey of Pennsylvania
Categories: Coal mines and mining
Type: BOOK - Published: 1880 - Publisher:

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Annual Report of the Geological Survey of Pennsylvania
Language: en
Pages: 868
Authors: Pennsylvania. Geological Survey
Categories: Coal mines and mining
Type: BOOK - Published: 1886 - Publisher:

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Annual Report of the Geological Survey of Pennsylvania
Language: en
Pages: 0
Authors: Pennsylvania. Geological Survey (2d, 1874-1890)
Categories: Coal mines and mining
Type: BOOK - Published: - Publisher:

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Annual Report of the Geological Survey of Pennsylvania for ...
Language: en
Pages: 856
Authors: Geological Survey of Pennsylvania
Categories: Coal mines and mining
Type: BOOK - Published: 1886 - Publisher:

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Annual Report of the Geological Survey of Pennsylvania ...
Language: en
Pages: 346
Authors: Geological Survey of Pennsylvania
Categories: Coal mines and mining
Type: BOOK - Published: 1887 - Publisher:

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