@book{68394,
	author = {Ramírez Necoechea, Ramiro. and Márquez Jaimes, María Luisa.},
	title = {Manual de aditivos y suplementos para la alimentación animal},
	publisher = {Ed. Manual Agropecuario,},
	year = {1987},
	address = {Mèxico :},
	edition = {2 ed.},
	note = {29-29}
}