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By: Stevens, W. E. - Höhn, E. O.Type: ArticleIn: The Canadian field-naturalistVolume: 72Series:Issue: 4Date: 1958Page Range: 168--170Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Stevens, W. E. - Scotter, George W.Type: ArticleIn: The Canadian field-naturalistVolume: 97Series:Issue: 3Date: 1983Page Range: 350--353Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: