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Author: Flaherty, Kathy J.
Published 2002
Record Source: Published Materials
Subjects and Genres: '; “...Natural gas Pennsylvania....”
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Author: Harper, John A.
Published 1989
Record Source: Published Materials
Subjects and Genres: '; “...Natural gas Pennsylvania....”
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3
Author: Harper, John A.
Published 1990
Record Source: Published Materials
Subjects and Genres: '; “...Natural gas Pennsylvania....”
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Author: McCoy, Kaycee L.
Published 2007
Record Source: Published Materials
Subjects and Genres: '; “...Natural gas Pennsylvania Maps....”
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