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By: Henson, Walter RobertType: ArticleIn: The Canadian field-naturalistVolume: 79Series:Issue: 4Date: 1965Page Range: 257--260Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Henson, Walter RobertType: ArticleIn: The Canadian field-naturalistVolume: 73Series:Issue: 1Date: 1959Page Range: 26--28Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Henson, Walter RobertType: ArticleIn: The Canadian field-naturalistVolume: 71Series:Issue: 3Date: 1957Page Range: 149--152Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: