@book{57534,
	author = {Sprague, Ernest W.},
	title = {Improving maize production in Latin American},
	publisher = {Centro Internacional de Mejoramiento de Maíz y Trigo,},
	year = {(198 ?)},
	address = {México, D.F. :},
	note = {Ponencia presentada en: Latin American Food Production Conference (17): 1981, Santiago, Chile}
}