@book{197710,
	author = {Vega Rivera, Luz María},
	title = {Introducción a contribuciones de Puerto Rico},
	publisher = {s.n.]},
	year = {1999.},
	address = {[S.l.},
	edition = {Ed. 2001},
	note = {"99-28P-01A-206"--T.p. verso.}
}