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By: Choquette, L. P. E. - Broughton, Eric - Currier, A. A. - Cousineau, J. G. - Novakowski, N. S.Type: ArticleIn: The Canadian field-naturalistVolume: 86Series:Issue: 2Date: 1972Page Range: 127--132Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: