@book{40730,
	author = {Giordana, C. A.},
	title = {Estudio de concentración de minerales pesados de una roca ultrabásica (serpetina), prov. de Córdoba.},
	publisher = {IDGYM,},
	year = {jul, 1969.},
	series = {Informe Inédito},
	address = {Jujuy :}
}