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  1. By: Zettler, Erik R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 109
    Issue: 4
    Date: 1995
    Page Range: 513--513
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Zettler, Erik R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 108
    Issue: 4
    Date: 1994
    Page Range: 517--518
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Zettler, Erik R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 108
    Issue: 3
    Date: 1994
    Page Range: 386--386
    Publication Info: Ottawa Ottawa Field-Naturalists' Club