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By: Angus, Robert B.Type: ArticleIn: Comparative cytogenetics : international journal of plant & animal cytogenetics, karyosystematics and molecular systematicsVolume: 17Series:Issue:Date: 2023Page Range: 295--326Publication Info: St. Petersburg, Russia [Published] with technical support of Zoological Institute RAS [2007]-Subjects: banding Chromosomes experimental hybrids Helophorus Karyotypes Parthenogenesis triploidy