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  1. By: Bork, Edward W. - Adams, Barry W. - Willms, W. D. (Walter David),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 116
    Issue: 1
    Date: 2002
    Page Range: 51--59
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Donkor, Noble T. - Okello, Moses M. - Hudson, Robert J. - Bork, Edward W.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 117
    Issue: 2
    Date: 2003-04-01
    Page Range: 196--202
    Publication Info: Ottawa Ottawa Field-Naturalists' Club