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  1. By: Jamison, Judith A. - Douglas, George W.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 112
    Issue: 2
    Date: 1998
    Page Range: 284--288
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Douglas, George W. - Jamison, Judith A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 115
    Issue: 3
    Date: 2001
    Page Range: 455--459
    Publication Info: Ottawa Ottawa Field-Naturalists' Club