@book{157947,
	author = {Fleck, William B. and Vroblesky, Don A.},
	title = {Simulation of ground-water flow of the coastal plain aquifers in parts of Maryland, Delaware, and the District of Columbia},
	publisher = {U.S. G.P.O.},
	year = {1996.},
	series = {Regional aquifer-system analysis--northern Atlantic coastal plain},
	address = {Washington},
	note = {Nine folded maps in portfolio.}
}