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  1. By: Thatcher, Roscoe Wilfred,
    Publication info: New York, McGraw, 1921
    Holding Institution: University of Toronto - Gerstein Science Information Centre
  2. By: Thatcher, Roscoe Wilfred,
    Edition: 1st ed.
    Publication info: New York [etc.], McGraw-Hill book company, inc, 1921
    Holding Institution: Multiple institutions
  3. By: Bessey, Charles E. (Charles Edwin), - Bruner, Lawrence, - Smith, Howard Remus, - Swezey, Goodwin D. - Thatcher, Roscoe Wilfred,
    Edition: 9th ed.
    Publication info: Chicago, The University publishing co, 1911
    Holding Institution: Library of Congress