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By: La Roi, GeorgeType: ArticleIn: The Canadian field-naturalistVolume: 91Series:Issue: 3Date: 1977Page Range: 269--272Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ross, Michael S. - La Roi, GeorgeType: ArticleIn: The Canadian field-naturalistVolume: 104Series:Issue: 3Date: 1990Page Range: 394--402Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: