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  1. By: Vergara, Valeria
    Type: Article
    In: The Canadian field-naturalist
    Volume: 115
    Issue: 1
    Date: 2001
    Page Range: 22--33
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Vergara, Valeria
    Type: Article
    In: The Canadian field-naturalist
    Volume: 115
    Issue: 1
    Date: 2001
    Page Range: 170--172
    Publication Info: Ottawa Ottawa Field-Naturalists' Club