@book{43137,
	author = {Freitas, Luiz M. M. de. and Lott, W. L.},
	title = {Experimentos de abonos en dos zonas de tierras altas de sabana del Brasil (1958-1959)},
	publisher = {American International Association. Ibec Researrch Institute,},
	year = {1960},
	series = {Boletín},
	address = {New York :}
}