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  1. By: Hudson, John H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 89
    Issue: 3
    Date: 1975
    Page Range: 339--339
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Harms, Vernon L - Hudson, John H. - Ledingham, George F.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 100
    Issue: 1
    Date: 1986
    Page Range: 45--51
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Harms, Vernon L - Hudson, John H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 92
    Issue: 4
    Date: 1978
    Page Range: 389--391
    Publication Info: Ottawa Ottawa Field-Naturalists' Club