@book{19440,
	author = {Hawkes, J.G. and Hjerting, J.P.},
	title = {The potatoes of Argentina, Brasil, Paraguay y Uruguay :},
	publisher = {Clarendon Press,},
	year = {1969.},
	series = {Annals of botany memoirs},
	address = {Oxford :},
	note = {Incluye 150 láminas fuera de texto.}
}