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1. Bedrock geology of the Bergholz quadrangle, Carroll and Jefferson counties, Ohio /

DeLong, Richard M. Ohio Division of Geological Survey,.

2. Bedrock geology of the Carrollton quadrangle, Carroll County, Ohio /

DeLong, Richard M. Ohio Division of Geological Survey,.

3. Bedrock geology of the Dellroy quadrangle, Carroll County, Ohio /

DeLong, Richard M. Ohio Geological Survey,.