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By: Roland, Carl A. - Cook, Mary B.Type: ArticleIn: The Canadian field-naturalistVolume: 112Series:Issue: 1Date: 1998Page Range: 158--160Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Cook, Mary B. - Roland, Carl A.Type: ArticleIn: The Canadian field-naturalistVolume: 116Series:Issue: 2Date: 2002Page Range: 192--304Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: