@book{169945,
	author = {Gómez Mena, Heriberto and  Ayala Oseguera, José, director },
	title = {Uso de lasalocida o enzimas exógenas en la engorda de ovinos criollos  /},
	publisher = {El autor,},
	year = {2014},
	address = {México  :},
	url = {http://10.13.5.2/tesis/sist109652.pdf}
}