The Rare EarthsNote 406 — Chapter XIV · THE ERBIUM AND YTTERBIUM GROUPS—YTTRIUM AND SCANDIUMReading editionJ. Amer. Chem. Soc. 1910, 32, 873.◇Copy noteReturn to CHAPTER XIV THE ERBIUM AND YTTERBIUM GROUPS—YTTRIUM AND SCANDIUM