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  1. By: Lowry, Lloyd F - Nelson, Robert R. - Frost, Kathryn J.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 101
    Issue: 1
    Date: 1997
    Page Range: 6--12
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Lowry, Lloyd F - Burns, John J. - Nelson, Robert R.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 101
    Issue: 2
    Date: 1997
    Page Range: 141--146
    Publication Info: Ottawa Ottawa Field-Naturalists' Club