@book{9573,
	author = {Alfonseca, Manuel. and Trillas, Enric.},
	title = {La Vida en otros mundos },
	publisher = {McGraw-Hill, },
	year = {D.L.1992.},
	series = {Serie McGraw-Hill de divulgación científica},
	address = {Madrid : },
	note = {Indice.}
}