@book{96578,
	author = {Duran Leyva, Jesús Manuel.},
	title = {Efecto de virginiamicina sobre parametros productivos en vacas Holstein Friesian en la Comarca Lagunera},
	publisher = {El autor,},
	year = {2009},
	address = {Bermejillo, Durango. :},
	url = {http://10.13.5.2/tesis/108218.pdf}
}