1962. 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.
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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.
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.
1962. Walker, Alfred C. Map side also contains legend and explanation of map symbols. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Text includes infor... 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. Walker, Alfred C. Scale bar lower left corner of map. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Map side also contains legend and explanation... Ohio. Division of Water.
1960. Walker, Alfred C. Scale bar lower left corner of map. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Map side also contains legend and explanation... Ohio. Division of Water.
1958. Walker, Alfred C. Scale bar lower left corner of map. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Map side also contains legend and explanation... Ohio. Division of Water.
39. Map of the Upper portion of the Tuscarawas River Basin showing availability of underground 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" Scale bar lower lef... Ohio. Division of Water.
1962. Walker, Alfred C. Scale bar lower left corner of map. "Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water" Text includes information about generalized s... Ohio. Division of Water.