@book{40714,
	author = {Giordana, C. A.},
	title = {Ensayos de concentración del fino menor 10 mm del mineral de manganeso de los Viscos, Farallón Negro, prov. de Catamarca.},
	publisher = {IDGYM,},
	year = {jul, 1967.},
	series = {Informe Inédito},
	address = {Jujuy :}
}