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- 3 editions - first published in 1990
Age of the Bedford Shale, Berea Sandstone, and Sunbury Shale in the Appalachian and Michigan basins, Pennsylvania, Ohio, and Michigan1 edition - first published in 1970
Bedrock geology of the Evitts Creek and Pattersons Creek quadrangles, Maryland, Pennsylvania, and West Virginia1 edition - first published in 1964
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