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  1. By: Gauthier, Maureen C. - Blokpoel, Hans, - Curtis, Steven G
    Type: Article
    In: The Canadian field-naturalist
    Volume: 90
    Issue: 2
    Date: 1976
    Page Range: 196--199
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Blokpoel, Hans, - Gauthier, Maureen C.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 94
    Issue: 3
    Date: 1980
    Page Range: 293--299
    Publication Info: Ottawa Ottawa Field-Naturalists' Club