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  1. By: Campbell, Kenneth B. - Derksen, Arthur J . - Remnant, Richard A. - Stewart, Kenneth W
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 4
    Date: 1991
    Page Range: 568--570
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Remnant, Richard A. - Graveline, Paul G. - Bretecher, Ronald L.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 111
    Issue: 4
    Date: 1997
    Page Range: 660--662
    Publication Info: Ottawa Ottawa Field-Naturalists' Club