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  1. By: Ewins, Peter J. - Andress, R. A. (Bud)
    Type: Article
    In: The Canadian field-naturalist
    Volume: 109
    Issue: 4
    Date: 1995
    Page Range: 418--425
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Ewins, Peter J. - Andress, R. A. (Bud)
    Type: Article
    In: The Canadian field-naturalist
    Volume: 109
    Issue: 4
    Date: 1995
    Page Range: 426--432
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Lang, Anthony L. - Andress, R. A. (Bud) - Martin, Pamela A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 113
    Issue: 4
    Date: 1999
    Page Range: 621--626
    Publication Info: Ottawa Ottawa Field-Naturalists' Club