@book{166711,
	author = {National Academy of Sciences (Washington) and National Academy of Sciences (Washington)},
	title = {Necesidades nutritivas de los ovinos /},
	publisher = {Hemisferio Sur,},
	year = {1975},
	address = {Buenos Aires :},
	edition = {1 edición},
	note = {ej1 - ej.2: S/N }
}