@book{180760,
	author = {Alley, William M. and Reilly, Thomas E. and Geological Survey (U.S.)  },
	title = {Sustainability of ground-water resources},
	publisher = {U.S. Dept. of the Interior, U.S. Geological Survey},
	year = {1999.},
	series = {U.S. Geological Survey circular},
	address = {Denver, Colo.}
}