TY - RPRT TI - Simulation of ground-water flow of the coastal plain aquifers in parts of Maryland, Delaware, and the District of Columbia AU - W.B. Fleck AU - D.A. Vroblesky PY - 1996 DO - 10.3133/pp1404j UR - https://pubs.usgs.gov/publication/pp1404J ID - pp1404J ER -