@book{7699,
	author = {Gellner, Ernest},
	title = {El Arado, la espada y el libro :},
	publisher = {Península,},
	year = {1994},
	series = {Península/ideas ;},
	address = {Barcelona :},
	note = {Tít. orig.: Plough, sword and book : the structure of human history}
}