"Trusts." . . "Tungsten Group." . . "Mines Industrie Finances." . . "Mercury Group." . . . . . . . . . . . . . "Eight mineral cartels : the new challenge to industrialized nations"@en . "Eight mineral cartels: the new challenge to industrial nations"@en . . . "Eight mineral cartels: the new challenge to industrialized nations" . . . . . . . . . . . . . . . . . . . . . . . . "Metals Week." . . "Association of Iron Exporting Countries." . .