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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Robertson, T. Brailsford (Thorburn Brailsford),
    Publication info: New York [etc.], Longmans, Green and co, 1918
    Holding Institution: University of California Libraries
  2. By: Robertson, T. Brailsford (Thorburn Brailsford),
    Publication info: New York, Longmans, 1920
    Holding Institution: University of Toronto - Gerstein Science Information Centre
  3. By: Robertson, T. Brailsford (Thorburn Brailsford),
    Publication info: Philadelphia, Lea & Febiger, 1920
    Holding Institution: University of California Libraries