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  1. By: Stevens, Richard T. - Ashwood, Tom L. - Sleeman, Jonathan M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 111
    Issue: 2
    Date: 1997
    Page Range: 312--314
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Stevens, Richard T. - Kennedy, Michael L.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 113
    Issue: 4
    Date: 1999
    Page Range: 664--667
    Publication Info: Ottawa Ottawa Field-Naturalists' Club