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