@book{23549,
	author = {Chilean Nitrate Educational Bureau. and Willis, L. G.},
	title = {Bibliography of references to the literature on the minor elements and their relation to plant and animal nutrition},
	publisher = {Chilean Nitrate Educational Bureau,},
	year = {1939},
	address = {New York :},
	edition = {3 ed.},
	note = {Suplementos, 1-7}
}