Ground-water levels in the lower Paleozoic and Precambrian crystalline rocks, southeastern Chester County, Pennsylvania, July and August 1986 / by John A. Garges
Scale 1:24000 W 75⁰40'00"-W 75⁰300'00"/N 40⁰02'30"-N 39⁰55'00"
Note:
Relief shown by contours and spot heights. "Prepared in cooperation with the Chester County Water Resources Authority." Black line printing. Includes location map.