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  1. By: Robarts, Richard D.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 93
    Issue: 4
    Date: 1979
    Page Range: 459--460
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Robarts, Richard D.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 91
    Issue: 4
    Date: 1977
    Page Range: 430--431
    Publication Info: Ottawa Ottawa Field-Naturalists' Club