@book{3999,
	author = {Visocky, Adrian P. and Cartwright Keros.},
	title = {Geology, hydrology and water quality of the cambrian and ordovician systems in Northern Illinois},
	publisher = {Department of Energy and Natural Resources,},
	year = {1985},
	series = {Cooperative Groundwater Report},
	address = {Champaign, Ill :}
}