1986. Schmidt, James J. Relief shown by contours and spot heights. by James J. Schmidt ; cartography, David S. Orr. Scale 1:62,500 "Total copies printed: 500." Includes lo... Ohio. Department of Natural Resources.
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1986. Walker, Alfred C. by Alfred C. Walker ; cartography, David S. Orr. "Total copies printed: 500." Scale 1:62,500 Relief shown by contours and spot heights. Includes lo... Ohio. Department of Natural Resources.
1986. Walker, Alfred C. "Total copies printed: 500." by Alfred C. Walker ; cartography, by David S. Orr. Scale 1:62,500 Relief shown by contours and spot heights. Includes... Ohio. Department of Natural Resources.
1986. Walker, Alfred C. by Alfred C. Walker ; cartography, David S. Orr. Includes location map. Scale 1:62,500 Relief shown by contours and spot heights. "Total copies pri... Ohio. Department of Natural Resources.
1986. Hartzell, Glenn W. Includes location map. Scale 1:62,500 Relief shown by contours and spot heights. by Glen W. Hartzell ; cartography, David S. Orr. Ohio. Department of Natural Resources.
1986. Hallfrisch, Michael. Includes location map. Scale 1:62,500 Relief shown by contours and spot heights. by Michael Hallfrisch ; cartography, David S. Orr. "Total copies p... Ohio. Department of Natural Resources.
1986. Struble, Richard A. Includes references. Relief shown by contour lines and spot heights. Includes text, 3 tables, location map, and water-well logs. by Richard A. Stru... Ohio. Division of Geological Survey.
1986. Struble, Richard A. Includes text, 3 tables, location map, and water-well logs. Relief shown by contour lines and spot heights. by Richard A. Struble ; cartographic dr... Ohio. Division of Geological Survey.
1986. Risser, Michele. Relief shown by contour lines and spot heights. Scale approximately 1:63,360 Includes text, 3 tables, location map, and water-well logs. by Michele... Ohio. Division of Geological Survey.