@book{48671,
	author = {Riojas Guadiana, Enrique. and Venegas González, Eulalio.},
	title = {El cultivo de cebada en el estado de Hidalgo},
	publisher = {INIA. Campo Agrícola Experimental Valle de México,},
	year = {1980},
	series = {Circular CIAMEC},
	address = {Chapingo, Méx. :}
}