Phillips, S. W. (1987). Hydrogeology, degradation of ground-water quality, and simulation of infiltration from the Delaware River into the Potomac aquifers, northern Delaware. Towson, Md.: Dept. of the Interior, U.S. Geological Survey .MLA Citation
Phillips, Scott W. Hydrogeology, Degradation of Ground-water Quality, And Simulation of Infiltration From the Delaware River Into the Potomac Aquifers, Northern Delaware. Towson, Md.: Dept. of the Interior, U.S. Geological Survey , 1987.
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