@book{91372,
	author = {Ramírez, Rafael L. and Levine, Barry B,},
	title = {Problemas de desigualdad social en Puerto Rico},
	publisher = {Internacional},
	year = {1972.},
	series = {Colección Diálogo},
	address = {Río Piedras, P.R.},
	note = {Collection of articles by various authors.}
}