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By: Whitfield, Douglas W. A. - Gerrard, Jonathan M. - Maher, William J - Davis, D. WayneType: ArticleIn: The Canadian field-naturalistVolume: 88Series:Issue: 4Date: 1974Page Range: 399--407Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Gerrard, Jonathan M. - Gerrard, P. Naomi - Whitfield, Douglas W. A.Type: ArticleIn: The Canadian field-naturalistVolume: 94Series:Issue: 4Date: 1980Page Range: 391--397Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Gerrard, Jonathan M. - Whitfield, Douglas W. A. - Gerrard, Peter - Gerrard, P. Naomi - Maher, William JType: ArticleIn: The Canadian field-naturalistVolume: 92Series:Issue: 4Date: 1978Page Range: 375--382Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: