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By: Nette, Tony - Burles, Doug - Hoefs, ManfredType: ArticleIn: The Canadian field-naturalistVolume: 98Series:Issue: 2Date: 1984Page Range: 252--254Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Hoefs, Manfred - Hoefs, Hannelore - Burles, DougType: ArticleIn: The Canadian field-naturalistVolume: 100Series:Issue: 1Date: 1986Page Range: 78--84Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: