@book{4189,
	author = {Fernández-Northcote, Enrique N.},
	title = {Potato seedling screening for resistance to potato viruses x and y by the mass inoculation technique with spray gun},
	publisher = {Centro Internacional de la Papa,},
	year = {1991},
	series = {CIP Research guide},
	address = {Lima, Perú :},
	note = {D53-22}
}