Venule syringe for sterile collection of blood, by Bayer, in case, German, 1936 Venule syringe for sterile collection of blood 1936
Venule syringe for sterile collection of blood, in case, by I.G. Farben, German, 1935 Venule syringe for sterile collection of blood 1935
Venule syringe for sterile collection of blood, in case, Bayer, German, 1933 Venule syringe for sterile collection of blood 1933