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  1. By: Dyer, Michael
    Type: Article
    In: The Canadian field-naturalist
    Volume: 91
    Issue: 4
    Date: 1977
    Page Range: 428--429
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Dyer, Michael
    Type: Article
    In: The Canadian field-naturalist
    Volume: 88
    Issue: 4
    Date: 1974
    Page Range: 482--483
    Publication Info: Ottawa Ottawa Field-Naturalists' Club