@book{187714,
	author = {Hume, W. G. and Kramp, K. V.},
	title = {Producción comercial de cebollas y guisantes / },
	publisher = {Acribia, },
	year = {[1971]},
	series = {Manuales de Técnica Agropecuaria},
	address = {Zaragoza : }
}