1960. Schmidt, James J. Text includes information about generalized stratigraphic sequence of the rocks in the Big Walnut Creek Basin and quality of underground water. Map... Ohio. Division of Water.
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1960. 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.
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. 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.
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. Schmidt, James J. Scale bar lower left corner of map. Map side also contains legend and explanation of map symbols. "Prepared by JAMES J. SCHMIDT, Geologist, Ohio Di... Ohio. Division of Water.