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  1. By: Roddy, John Augustus,
    Publication info: Philadelphia, P. Blakiston's Son, [1917]
    Holding Institution: Internet Archive
  2. By: Roddy, John Augustus,
    Publication info: Philadelphia, P. Blakiston's Son, [1917]
    Holding Institution: University of California Libraries
  3. By: Roddy, John Augustus,
    Publication info: Philadelphia, P. Blakiston's son, [c1917]
    Holding Institution: University of Toronto - Gerstein Science Information Centre