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Start Over Year 1977 Publisher Ohio. Division of Geological Survey Bounding Box -180 -89.81531 180 89.456192

1. Mineral industries map of Ohio, 1977

Maps The Ohio State University Public content
1977. Duffield, Susan L. Base map by U.S. Geological Survey. Scale approximately 1:500,000 compiled by Susan L. Duffield ; cartographer, R. Anne Berry. Ohio. Division of Geological Survey.

2. Glacial geology of Ashland County, Ohio

Maps The Ohio State University Public content
1977. White, George W. (George Willard), 1903-1985. Includes bibliography. Ohio Docs no.: ONR 84.19:101. by George W. White. Ohio. Division of Geological Survey.

3. Glacial geology of Ashland County, Ohio

Maps The Ohio State University Public content
1977. White, George W. 1903-1985. by George W. White. Includes bibliography. Ohio Docs no.: ONR 84.19:101. Ohio. Division of Geological Survey.