@book{30257,
	author = {Mendel, Gérard},
	title = {La crisis de generaciones},
	publisher = {: Península},
	year = {, 1972},
	series = {Historia, ciencia, sociedad},
	address = {Barcelona},
	edition = {1ª ed.},
	note = {Traducción de: La crise de générations}
}