@book{51596,
	author = {Wallace, T.},
	title = {The diagnosis of mineral deficiencies in plants by visual symptoms},
	publisher = {Chemical Publishing Cp.,},
	year = {1953},
	address = {New York :},
	edition = {(2 ed.)},
	note = {c.2 idéntica, ed. por H. Majesty's Stationary Office, 1951}
}