7 phials of source material for electromagnetic separator, one labelled: 'Cd Cl2' (cadmium chloride), one labelled: 'W Cl6' (tungstenate chloride), one labelled: 'Cr Cl3' (chromium chloride), one labelled: 'Ag I' (silver iodine), one labelled: 'Se' (selenium metal), one labelled: 'Zn' (zinc), and one labelled: 'Sb' (antimony), unsigned, Europe, 1970-1980 Source material for electromagnetic separator in 7 phials 1970-1980