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  1. By: Adams, Jill D. - Freedman, Bill
    Type: Article
    In: The Canadian field-naturalist
    Volume: 113
    Issue: 3
    Date: 1999
    Page Range: 493--496
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Gräf, Andreas - Gilhen, John - Adams, Jill D.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 117
    Issue: 3
    Date: 2003-07-01
    Page Range: 415--418
    Publication Info: Ottawa Ottawa Field-Naturalists' Club