1960. Pree, Henry L. (Henry Louis), 1917-. Prepared by HENRY L. Pree, Jr., Geologist, Ohio Division of Water Map side also contains legend and explanation of map symbols. Text includes infor... Ohio. Division of Water.
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1960. Walker, Alfred C. Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water Scale bar lower center of map. Map side also contains legend and explanation of map... Ohio. Division of Water.
1960. Walker, Alfred C. Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water Map side also contains legend and explanation of map symbols. Text includes informa... Ohio. Division of Water.
1960. Walker, Alfred C. Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water Map side also contains legend and explanation of map symbols. Scale bar lower right... Ohio. Division of Water.
1960. Pree, Henry L. (Henry Louis), 1917-. Text includes information about generalized stratigraphic sequence of the rocks in the lower portion of the Grand River Basin and the quality of un... Ohio. Division of Water.
1960. Cummins, James W. 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.
1960. Cummins, James W. Scale bar lower left corner of map. Text includes information about generalized stratigraphic sequence of the rocks in the middle Mahoning River Ba... Ohio. Division of Water.
1960. Schmidt, James J. Text includes information about generalized stratigraphic sequence of the exposed rocks and quality of underground water. Map side also contains le... Ohio. Division of Water.
1960. Pree, Henry L. (Henry Louis), 1917-. Prepared by HENRY L. Pree, Jr., Geologist, Ohio Division of Water Text includes information about generalized stratigraphic sequence of the rocks i... Ohio. Division of Water.
1960. Walker, Alfred C. Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water Text includes information about generalized stratigraphic sequence of the rocks in ... Ohio. Division of Water.