@book{93326,
	author = {Burciaga Valenzuela, José Guadalupe.},
	title = {Productividad económica relativa del subsector lacteo del municipio de Viesca, Coahuila de 1990 a 2004 /},
	publisher = {El autor,},
	year = {2007.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/104885.pdf}
}