@book{28527,
	author = {Cortez Machado, Luz E. and Latorre Ramírez, Sergio J.},
	title = {Efectos de la Ractopamina Sobre los Parámetros Zootécnicos del Pollo de Engorde /},
	publisher = {Universidad Cooperativa de Colombia},
	address = {[Place of publication not identified] :},
	url = {spei-domus@correoucc.edu.co}
}