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"Coal mines and mining Pennsylvania" » "Coal lines and mining Pennsylvania", "Coal mines and lining Pennsylvania"
1
Published 1869
Record Source: Published Materials
Subjects and Genres: '; “...Coal mines and mining Pennsylvania Maps....”
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2
Author: Hoffman, John N.
Published 1972
Record Source: Published Materials
Subjects and Genres: '; “...Coal mines and mining Pennsylvania History 19th century....”
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