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By: Harris, Robert D.Type: ArticleIn: The Canadian field-naturalistVolume: 75Series:Issue: 3Date: 1961Page Range: 162--163Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Sugden, Lawson G - Thurlow, William J. - Harris, Robert D. - Vermer, KeesType: ArticleIn: The Canadian field-naturalistVolume: 88Series:Issue: 3Date: 1974Page Range: 303--311Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: