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  1. By: Christie, David S.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 72
    Issue: 4
    Date: 1958
    Page Range: 172--173
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Christie, David S.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 82
    Issue: 1
    Date: 1968
    Page Range: 54--54
    Publication Info: Ottawa Ottawa Field-Naturalists' Club