@book{168560,
	author = {Burciaga Valenzuela, José Guadalupe},
	title = {Productividad económica relativa del subsector lácteo del municipio de Viesca, Coahuila de 1990 a 2004 /},
	publisher = {El autor,},
	year = {2007},
	address = {Chapingo, Méx.  :}
}