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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Porter, William Townsend,
    Edition: 3d ed.
    Publication info: Cambridge, Mass, University press, 1903
    Holding Institution: Columbia University Libraries
  2. By: Porter, William Townsend,
    Publication info: Cambridge, Mass, The University Press, 1906
    Holding Institution: University of California Libraries
  3. By: Porter, William Townsend,
    Publication info: Cambridge, Mass, The University Press, 1901
    Holding Institution: Columbia University Libraries
  4. By: Porter, William Townsend,
    Publication info: Cambridge, Mass, The University Press, 1906
    Holding Institution: Columbia University Libraries
  5. By: Porter, William Townsend,
    Edition: 2nd ed.
    Publication info: Cambridge, Mass, University Press, 1903
    Holding Institution: Columbia University Libraries