@book{21943,
	author = {Gomez-Gomez, Fernando. and Heisel, J. E.},
	title = {Summary appraisals of the Nation's ground-water resources--Caribbean region},
	publisher = {U.S. Govt. Print. Off.},
	year = {1980.},
	series = {Geological Survey professional paper ; 813-U},
	address = {Washington}
}