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2. Ground-water resources of Hardin County

Maps The Ohio State University Public content
1983. Schmidt, James J. Includes location map. by James J. Schmidt, 1982 ; cartography, Douglas E. Keen. Scale 1:62,500 Relief shown by contours and spot heights. Ohio. Department of Natural Resources.

3. Ground-water resources of Henry County

Maps The Ohio State University Public content
1983. Schmidt, James J. Includes location map. Scale 1:62,500 Relief shown by contours and spot heights. by James J. Schmidt, 1982 ; cartography, Douglas E. Keen. Ohio. Division of Water.

4. Ground-water resources of Logan County

Maps The Ohio State University Public content
1983. Schmidt, James J. Scale 1:62,500. by James J. Schmidt ; cartography, Douglas E. Keen. Includes profile and index map. Relief shown by contours and spot heights. Ohio. Division of Water.

9. Important farmlands, Gladwin County, Michigan

Maps University Of Minnesota Public content
1983. United States. Soil Conservation Service. Shows land use.; "Interpretations derived from soil map constructed 1972 by Cartographic Division, Soil Conservation Service, USDA of Gladwin Count... The Service (Lincoln, Neb.).