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  1. By: Stelfox, Harry A. - Brewster, Gregg J.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 93
    Issue: 2
    Date: 1979
    Page Range: 132--138
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Robertson, Ian - Stelfox, Harry A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 83
    Issue: 4
    Date: 1969
    Page Range: 407--408
    Publication Info: Ottawa Ottawa Field-Naturalists' Club