The Rare EarthsNote 548 — Chapter XX · ARTIFICIAL SILK—ITS PRODUCTION AND USE IN THE MANTLE INDUSTRYReading editionVide, e.g. D. R. P. 199615 of June, 1908.◇[549] E. 25549, 1908.◇Copy noteReturn to CHAPTER XX ARTIFICIAL SILK—ITS PRODUCTION AND USE IN THE MANTLE INDUSTRYReturn to CHAPTER XX ARTIFICIAL SILK—ITS PRODUCTION AND USE IN THE MANTLE INDUSTRY