1959. Schmidt, James J. Map side also contains legend and explanation of map symbols. Scale bar lower right corner of map. "Prepared by JAMES J. SCHMIDT, Geologist, Ohio D... Ohio. Division of Water.
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1959. Walker, Alfred C. Text includes information about generalized stratigraphic sequence of the rocks in the Tiffin Basin and the quality of underground water. Map side ... Ohio. Division of Water.
1959. Walker, Alfred C. Map side also contains legend and explanation of map symbols. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water, from data compiled ... Ohio. Division of Water.
1959. Walker, Alfred C. Map side also contains legend and explanation of map symbols. Text includes information about generalized stratigraphic sequence of the rocks in th... Ohio. Division of Water.
1962. Stein, Russell B. Prepared by RUSSELL B. STEIN, Geologist, Ohio Division of Water Text includes information about generalized stratigraphic sequence of the rocks in ... Ohio. Division of Water.
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.
1947. Geological Survey of Ohio. Library's c.2 mounted on cloth backing. "Prepared in cooperation with Division of Labor Statistics, Department of Industrial Relations, Divisions o... Ohio. Division of Geological Survey.
1947. Geological Survey of Ohio. Library's c.2 mounted on cloth backing. "Prepared in cooperation with Division of Labor Statistics, Department of Industrial Relations, Divisions o... Ohio. Division of Geological Survey.
1957. Smith, Robert W. Base map by U.S. Geological Survey. compiled by Robert W. Smith. Scale 1:500,000 ; Lambert conformal conic projection. Ohio. Division of Geological Survey.
1948. Alkire, Robert L. 1910-. Includes index to oil and gas fields. Includes: Generalized section of rocks of Ohio. Scale [1:380,160] compiled by Robert L. Alkire ; drafting by ... Ohio. Division of Geological Survey.