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DeLong, Richard M.
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Paper Map
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Ohio
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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,.
4. Bedrock geology of the Flint Ridge area, Licking and Muskingum Counties, Ohio /
DeLong, Richard M. Ohio Geological Survey,.