@book{154164,
	author = {Veve, Thalia D. and United States},
	title = {Atlas of ground-water resources in Puerto Rico and the U.S. Virgin Islands},
	publisher = {U.S. Dept. of the Interior, U.S. Geological Survey},
	year = {1996.},
	series = {Water resources investigations report},
	address = {San Juan, P.R.},
	note = {Relief shown by contours.}
}