1960. Cummins, James W. 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.
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1960. Schmidt, James J. Map side also contains legend and explanation of map symbols. Text includes information about generalized stratigraphic sequence of the rocks of th... Ohio. Division of Water.
1960. Schmidt, James J. Scale bar left right corner of map. Text includes information about generalized stratigraphic sequence of the rocks of the lower portion of the upp... Ohio. Division of Water.
1960. Boyce, T.F. Scale bar lower left corner of map. Map side also contains legend and explanation of map symbols. "Prepared by T.F. Boyce, T.R. Smith, F.J. Baker, ... Ohio. Division of Water.
1959. Walker, Alfred C. Text includes information about generalized stratigraphic sequence of the rocks in the Blanchard Basin and quality of underground water. Map side a... 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.
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 Map side also contains legend and explanation of map symbols. Scale bar lower right... Ohio. Division of Water.
1959. Walker, Alfred C. Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water, from data compiled by Lawrence R. Brunstetter. Scale bar lower left corner. Text i... Ohio. Division of Water.
1959. Walker, Alfred C. Map side also contains legend and explanation of map symbols. Scale bar lower right corner. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division... Ohio. Division of Water.