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  1. By: Roe, Nicholas A. - Stephen, W. J.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 91
    Issue: 3
    Date: 1977
    Page Range: 309--310
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Roe, Nicholas A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 89
    Issue: 2
    Date: 1975
    Page Range: 135--142
    Publication Info: Ottawa Ottawa Field-Naturalists' Club