@book{102044,
	author = {Pérez Gómez, José Alfredo.},
	title = {Urea protegida en la engorda de corderos},
	publisher = {El autor,},
	year = {2011.},
	address = {Chapingo, Méx. :},
	note = {Para ver el contenido del material haga clic en la liga},
	url = {http://10.13.5.2/tesis/113705.pdf}
}