@book{90558,
	author = {Stycos, J. Mayone. and P.R. Universidad. Recinto de Río Piedras. Centro de Investigaciones Sociales.},
	title = {Family and fertility in Puerto Rico},
	publisher = {Columbia University Press},
	year = {1958.},
	address = {New York,},
	note = {At head of title : Social Sciences Research Center College of Social Sciences, University of Puerto Rico.}
}