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By: Nagorsen, David W. - Scudder, G. G. E. (Geoffrey G. E.) - Huggard, David J. - Stewart, Heather - Panter, NickType: ArticleIn: The Canadian field-naturalistVolume: 115Series:Issue: 1Date: 2001Page Range: 1--8Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: