@book{95676,
	author = {Márquez Berber, Sergio Roberto.},
	title = {Rentabilidad y competitividad del Trigo :},
	publisher = {El autor,},
	year = {2008},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/107304.pdf}
}