@book{51766,
	author = {Torres González, Sigfredo. and Puerto Rico. Autoridad de Tierras.},
	title = {Reconnaissance of the ground-water resources of Vieques Island, Puerto Rico},
	publisher = {Dept. of the Interior, U.S. Geological Survey},
	year = {1989.},
	series = {Water-resources investigations report / U.S. Geological Survey},
	address = {San Juan, P.R.}
}