The Rare EarthsNote 606 — Chapter XXI · OTHER TECHNOLOGICAL USES OF THE CERIUM AND YTTRIUM ELEMENTS, ZIRCONIUM AND THORIUMReading editionZeitsch. anorg. Chem. 1910, 65, 218.◇Copy noteReturn to CHAPTER XXI OTHER TECHNOLOGICAL USES OF THE CERIUM AND YTTRIUM ELEMENTS, ZIRCONIUM AND THORIUM