Author: James Donaldson SislerPublisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 10
Book Description
Coal Beds in Butler County, Pennsylvania PDF Download
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Author: James Donaldson SislerPublisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 10
Book Description
Author: James Donaldson Sisler
Author: Elmer Davisson Patterson
Author: T. E. Gray
Author: A. A. Berk
Author: George W. Birge
Author: Pennsylvania. Bureau of Topographic and Geologic Survey
Author: Pennsylvania. Topographic and Geological Survey Commission
Author: Geological Survey (U.S.)
Author: John Kilgore Johnston
Author: Elmer Davisson Patterson