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  1. By: Copley, Darren - Fraser, David - Finlay, J. Campbell
    Type: Article
    In: The Canadian field-naturalist
    Volume: 113
    Issue: 2
    Date: 1999
    Page Range: 226--229
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Fraser, David
    Type: Article
    In: The Canadian field-naturalist
    Volume: 102
    Issue: 4
    Date: 1988
    Page Range: 748--749
    Publication Info: Ottawa Ottawa Field-Naturalists' Club