@book{180588,
	author = {Rodríguez-Martínez, Jesús.      and Richards, Ronald T. and Autoridad de Acueductos y Alcantarillados de Puerto Rico.},
	title = {Detection of conduit-controlled ground-water flow in northwestern Puerto Rico using aerial photograph interpretation and geophysical methods},
	publisher = {U.S. Dept. of the Interior, U.S. Geological Survey},
	year = {2000.     },
	address = {San Juan, P.R.}
}