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  1. By: Gilhen, John - Coad, Brian W. - Hebda, Andrew
    Type: Article
    In: The Canadian field-naturalist
    Volume: 117
    Issue: 3
    Date: 2003-07-01
    Page Range: 475--477
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Gilhen, John - Hebda, Andrew
    Type: Article
    In: The Canadian field-naturalist
    Volume: 116
    Issue: 4
    Date: 2002
    Page Range: 536--546
    Publication Info: Ottawa Ottawa Field-Naturalists' Club