@book{79039,
	author = {Río González, Cristóbal del   and Río Sánchez, Cristóbal del},
	title = {Costos III},
	publisher = { : ECASA},
	year = {, 1993},
	address = {México},
	note = {Reimpresión 1987, 1988, 1989, 1989, 1990, 1991, 1991, 1992, 1993, }
}