@book{153590,
	author = {Rodríguez, José M. and Puig, Juan Carlos and Autoridad de Acueductos y Alcantarillados de Puerto Rico.},
	title = {Ground-water quality in the Caguas-Juncos Valley, Puerto Rico, April to October, 1990},
	publisher = {U.S. Geological Survey},
	year = {1996.},
	series = {U.S. Geological Survey open-file report},
	address = {San Juan, P.R.}
}