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  1. By: Agassiz, Alexander, - Agassiz, George R. (George Russell),
    Publication info: Boston :Houghton Mifflin,1913.
    Holding Institution: University of Toronto - Gerstein Science Information Centre
  2. By: Agassiz, Alexander, - Agassiz, George R. (George Russell),
    Publication info: Boston,Constable;1913.
    Holding Institution: Multiple institutions