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  1. By: Leatherwood, S - Matkin, C. O. - Hall, J. D. - Ellis Graeme M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 104
    Issue: 3
    Date: 1990
    Page Range: 362--371
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Watson, Jane C. - Ellis Graeme M. - Smith, Thomas G. - Ford, John K. B.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 111
    Issue: 2
    Date: 1997
    Page Range: 277--286
    Publication Info: Ottawa Ottawa Field-Naturalists' Club