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  1. By: Dempsey, H. C.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 57
    Issue: 4-5
    Date: 1943
    Page Range: 93--94
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Dempsey, H. C.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 48
    Issue: 9
    Date: 1934-12
    Page Range: 145--145
    Publication Info: Ottawa Ottawa Field-Naturalists' Club