@book{110800,
	author = {Ellis, S R and Gómez Gómez, F.},
	title = {Hydrologic characteristics of lagoons at San Juan, Puerto Rico, during a Janaury 1974 tidal cycle},
	publisher = {U.S. Geological Survey},
	year = {1976.},
	series = {Water-resources investigations},
	address = {[Washington]}
}