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  1. By: Donovan, Marta
    Type: Article
    In: The Canadian field-naturalist
    Volume: 120
    Issue: 2
    Date: 2006-04-01
    Page Range: 157--162
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Donovan, Marta - Douglas, George W.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 115
    Issue: 3
    Date: 2001
    Page Range: 466--471
    Publication Info: Ottawa Ottawa Field-Naturalists' Club