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By: Hofmann, Theo - Chardine, John W. - Blokpoel, Hans,Type: ArticleIn: The Canadian field-naturalistVolume: 111Series:Issue: 2Date: 1997Page Range: 308--309Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Rodway, Michael S - Regehr, Heidi M - Chardine, John W.Type: ArticleIn: The Canadian field-naturalistVolume: 117Series:Issue: 1Date: 2003-01-01Page Range: 70--75Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: