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  1. By: Keghel, Maurice de,
    Publication info: Paris, B. Tignol, [1913]
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Mother-of-pearl  Pearls  
  2. By: Baker, Walter (Chemist)
    Publication info: London, Great Seal Patent Office, 1856
    Holding Institution: Wellcome Library
    Subjects: Electronic books  Great Britain  Mother-of-pearl  Patents  Shells