@book{63142,
	author = {Fernández-Ruiz, César. and Lauzurica, Francisco Javier.},
	title = {La natalidad / },
	editor = {Aldus)},
	publisher = {Plus Ultra, },
	year = {[1952] (},
	series = {La sabiduría del hogar},
	address = {Madrid : }
}