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  1. By: Mackie, G L - Topping, Jane M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 102
    Issue: 4
    Date: 1988
    Page Range: 617--626
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Topping, Jane M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 101
    Issue: 1
    Date: 1997
    Page Range: 119--119
    Publication Info: Ottawa Ottawa Field-Naturalists' Club