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  1. By: Sutherland, James M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 2
    Date: 1991
    Page Range: 267--273
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Sutherland, James M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 101
    Issue: 4
    Date: 1997
    Page Range: 601--603
    Publication Info: Ottawa Ottawa Field-Naturalists' Club