@book{52379,
	author = {Romo Calderón, Enrique. and Carballo Carballo, Aquiles.},
	title = {Características de tres variedades de sorgo para los Valles Altos},
	publisher = {INIA. Campo Agrícola Experimental Valle de Mexico,},
	year = {1980},
	series = {Circular CIAMEC},
	address = {Chapingo, Méx. :}
}