@book{969,
	author = {Millán García, José Ausberto Daniel. and Nava Urrutia, Mario Avelino.},
	title = {Cultivo asociado de maíz para grano y leguminosas forrajeras},
	publisher = {El autor,},
	year = {1989},
	address = {Chapingo, Méx. :},
	note = {39-204}
}