@book{25899,
	author = {Arnal, J. Vicenta. and García Escalera, Inés.},
	title = {El mundo del saber },
	publisher = {Ramón Sopena, },
	year = {1973.},
	series = {Biblioteca Hispania ilustrada},
	address = {Barcelona : },
	edition = {Nueva ed. rev. y ampl.}
}