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Start Over Year 1998 Subject Geology, Stratigraphic Bounding Box -180 -89.81531 180 89.456192

1. The ice age in Ohio

Maps The Ohio State University Public content
1998. Hansen, Michael C. Includes text and ill. by Michael Hansen. "Publication date: 9/98." Revised edition 1997. Scale approximately 1:2,100,000. Text, insets and ill. on... Ohio. Division of Geological Survey.

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