Altitude and configuration of the potentiometric surface in the Triassic sandstones and shales, northern Chester County, Pennsylvania, October 1989 through March 1990
Harrisburg, Pennsylvania : Department of the Interior, U.S. Geological Survey, 1990
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Map
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Altitude and configuration of the potentiometric surface in the Triassic sandstones and shales, northern Chester County, Pennsylvania, October 1989 through March 1990 / by B. Craig McManus
Relief shown by contours and spot heights. "Prepared in cooperation with the Chester County Water Resources Authority." Blue line print. Includes location map.