@book{47041,
	author = {Valdivia Bernal, Roberto. and Trejo Sánchez, Manuel.},
	title = {Sorgo de invierno en Nayarit},
	publisher = {Instituto Nacional de Investigaicones Agrícolas. Campo Agrícola Experimental Santiago Ixcuintla,},
	year = {1980},
	series = {Circular CIAPAN},
	address = {Santiago Ixcuintla, Nay. :}
}