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  1. By: Schueler, Frederick W - Baldwin,Donald H. - Rising, Jim,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 88
    Issue: 2
    Date: 1974
    Page Range: 141--150
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Heyland, J. Douglas - Chamberlain, Everett B. - Kimball,Charles F. - Baldwin,Donald H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 84
    Issue: 4
    Date: 1970
    Page Range: 398--399
    Publication Info: Ottawa Ottawa Field-Naturalists' Club