@book{70047,
	author = {Lengrand, Paul.},
	title = {Introducción a la educación permanente},
	publisher = {Teide},
	year = {1973.},
	series = {Colección Unesco. Programas y métodos de enseñanza.},
	address = {Barcelona},
	note = {Translation of An introduction to lifelong education.}
}