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  1. By: Wallace, Alfred Russel,
    Publication info: Toronto, G.N. Morang, 1898
    Holding Institution: Canadiana.org
    Subjects: 19th century  Addresses, essays, lectures  Civilization, Modern  Nineteenth century  Science  Vaccination  
  2. By: Williams, Henry Smith,
    Publication info: New York, Harper & Brothers, 1900
    Holding Institution: University of California Libraries
    Subjects: History  Nineteenth century  Science  
  3. By: Williams, Henry Smith,
    Publication info: New York, Harper, 1901
    Holding Institution: University of Toronto - Gerstein Science Information Centre
    Subjects: History  Nineteenth century  Science