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By: Greenwood, Raymond J. - Sargeant, Alan B.Type: ArticleIn: The Canadian field-naturalistVolume: 109Series:Issue: 4Date: 1995Page Range: 437--440Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Sargeant, Alan B. - Sovada, Marsha A. - Greenwood, Raymond J.Type: ArticleIn: The Canadian field-naturalistVolume: 101Series:Issue: 1Date: 1997Page Range: 95--97Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: