The Rare EarthsNote 228 — Chapter XI · THE CERIUM GROUP—CERIUMReading editionBer. 1907, 40, 4979.◇[229] Abstr. Chem. Soc. 1913, 104, ii. 712.◇Copy noteReturn to CHAPTER XI THE CERIUM GROUP—CERIUMReturn to CHAPTER XI THE CERIUM GROUP—CERIUM