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  1. By: Nursall, J. R. - Levin, Victor
    Type: Article
    In: The Canadian field-naturalist
    Volume: 78
    Issue: 2
    Date: 1964
    Page Range: 128--129
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Nursall, J. R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 82
    Issue: 2
    Date: 1968
    Page Range: 158--160
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Nursall, J. R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 87
    Issue: 2
    Date: 1973
    Page Range: 198--199
    Publication Info: Ottawa Ottawa Field-Naturalists' Club