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By: Mitchell, George J.Type: ArticleIn: The Canadian field-naturalistVolume: 73Series:Issue: 1Date: 1959Page Range: 6--13Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Mitchell, George J. - Riegert, Paul WType: ArticleIn: The Canadian field-naturalistVolume: 108Series:Issue: 3Date: 1994Page Range: 288--291Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: