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1
Subjects and Genres: ';
“...Coal mines and mining Pennsylvania....”
Book
2
Subjects and Genres: ';
“...Coal mines and mining Statistics....”
Book
3
Subjects and Genres: ';
“...Coal mines and mining Statistics....”
Book
4
Published 1870
Subjects and Genres: ';
“...Coal mines and mining Pennsylvania Statistics Periodicals....”
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Published Materials
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