@book{96935,
	author = {Díaz Gallardo, Roger Iván.},
	title = {El sistema milpa y sus recursos fitogenéticos en Santa María Tlahuitoltepec, Oaxaca},
	publisher = {El autor,},
	year = {2009},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/108579.pdf}
}