@book {1963,
	title = {Detection of manganese deficiency and toxicity in plants. Manganese in soils and plants},
	year = {1988},
	pages = {243-259},
	publisher = {Kluwer Publishers},
	organization = {Kluwer Publishers},
	address = {Dordrecht},
	author = {Hannam, R. J and Ohki, K}
}
