@book{10178,
	author = {Corrales ,  Mario  and Obando ,  Alvaro (Autor) },
	title = {Matemática estadistica educación diversificada a distancia tomo II.},
	publisher = {EUNED ,},
	year = {2009},
	address = {San José :},
	edition = {15 reimp. de la 1 ed. }
}