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  1. By: Pearson, Dean E. - Ortega, Yvette K.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 115
    Issue: 2
    Date: 2001
    Page Range: 354--354
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Pearson, Dean E.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 114
    Issue: 4
    Date: 2000
    Page Range: 703--704
    Publication Info: Ottawa Ottawa Field-Naturalists' Club