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By: Gilbertson, Michael - Hale, RobertType: ArticleIn: The Canadian field-naturalistVolume: 88Series:Issue: 3Date: 1974Page Range: 356--358Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Gilbertson, Michael - Hale, RobertType: ArticleIn: The Canadian field-naturalistVolume: 88Series:Issue: 3Date: 1974Page Range: 354--356Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Connors, Peter G. - Anderlini, Victor G. - Risebrough, Robert W. - Gilbertson, Michael - Hays, HelenType: ArticleIn: The Canadian field-naturalistVolume: 89Series:Issue: 2Date: 1975Page Range: 157--162Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Gilbertson, MichaelType: ArticleIn: The Canadian field-naturalistVolume: 88Series:Issue: 3Date: 1974Page Range: 273--280Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Gilbertson, MichaelType: ArticleIn: The Canadian field-naturalistVolume: 102Series:Issue: 3Date: 1988Page Range: 555--557Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: