@book{134333,
	author = {Santos, Diana. and López, Ramón,},
	title = {Matemática básica},
	publisher = {Publicaciones Puertorriqueñas},
	year = {c1992.},
	series = {Razonamiento Diálogico},
	address = {San Juan, P.R.},
	edition = {2a ed.}
}