@book{309,
	author = {DOWNIE, N.M. and HEATH, R.W.},
	title = {METODOS ESTADISTICOS APLICADOS/ },
	publisher = {HARLA},
	year = {1973},
	address = {MEXICO: },
	edition = {3},
	note = {INCLUYE INDICE. \ BIBLIOGRAFIA: P. 367-368.}
}