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  1. By: Pylypec, Bohdan
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 3
    Date: 1991
    Page Range: 346--349
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Pylypec, Bohdan
    Type: Article
    In: The Canadian field-naturalist
    Volume: 131
    Issue: 2
    Date: 2017-10-29
    Page Range: 170--178
    Publication Info: Ottawa Ottawa Field-Naturalists' Club