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  1. By: Barclay, Robert M. R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 98
    Issue: 3
    Date: 1984
    Page Range: 331--336
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Barclay, Robert M. R. - Thomson, Christine E. - Phelan, Frank J. S.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 96
    Issue: 2
    Date: 1982
    Page Range: 205--206
    Publication Info: Ottawa Ottawa Field-Naturalists' Club