@book{7214,
	author = {Ovenden, Michael W and Álvarez Claros, María Elena},
	title = {La vida en el universo :},
	publisher = {Eudeba,},
	year = {1977.},
	series = {Ciencia joven ;},
	address = {Buenos Aires :},
	edition = {3a ed.},
	note = {p.133.}
}