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Isopach and lithofacies maps of the Devonian in the Appalachian basin
Isopach and lithofacies maps of the Devonian in the Appalachian basin Author:W. A. Oliver, Jr Fold out maps of this geological area . Scale approx. 1:1,204,000 (1 in. = approx. 19 mi) 7 sheets (text on Sheet 1).