@book{114891,
	author = {Puerto Rico. and Autoridad de Acueductos y Alcantarillados de Puerto Rico.},
	title = {Pollution survey of the Loiza River and its tributaries /cPerformed by Puerto Rico Aqueduct and Sewer Authority, Production.},
	year = {1960.},
	address = {[n.p.]},
	note = {Mimeographed.}
}