@book{33661,
	author = {Osborn, F. and Aquino Francisco,},
	title = {Los Limites de la tierra /},
	publisher = {Fondo de cultura economica, },
	year = {1956},
	series = {(Coleccion moderna de conocimientos universales)},
	address = {Mexico : },
	edition = {1a ed.},
	note = {Titulo original: the limits of the earth}
}