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By: Burton, Philip J. - Robertson, Kenneth Ray, - Dennis, Ann - Robertson, Kenneth Ray,Edition: 2nd ed.Publication info: [Champaign, Ill.] (607 E. Peabody Dr., Champaign 61820), [Section of Botany and Plant Pathology, Illinois Natural History Survey], [1989]Volume: no. 3, 2nd ed.Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects:BHL Collections:
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By: Trevor, Miles - Burton, Philip J.Type: ArticleIn: The Canadian field-naturalistVolume: 113Series:Issue: 3Date: 1999Page Range: 396--400Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Burton, Philip J.Type: ArticleIn: The Canadian field-naturalistVolume: 115Series:Issue: 4Date: 2001Page Range: 719--720Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: