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  1. By: Poszig, Dörte - Theberge, John B
    Type: Article
    In: The Canadian field-naturalist
    Volume: 114
    Issue: 1
    Date: 2000
    Page Range: 62--71
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Poszig, Dörte - Apps, Clayton D. - Dibb, Alan
    Type: Article
    In: The Canadian field-naturalist
    Volume: 118
    Issue: 2
    Date: 2004-04-01
    Page Range: 191--194
    Publication Info: Ottawa Ottawa Field-Naturalists' Club