The Rare EarthsNote 425 — Chapter XIV · THE ERBIUM AND YTTERBIUM GROUPS—YTTRIUM AND SCANDIUMReading editionMeyer and Goldenberg, Chem. News, 1912, 106, 13.◇Copy noteReturn to CHAPTER XIV THE ERBIUM AND YTTERBIUM GROUPS—YTTRIUM AND SCANDIUM