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By: Martirosyan, A - Stepanyan, IlonaType: ArticleIn: Comparative CytogeneticsVolume: 3Series:Issue: 1Date: 2009Page Range: 11-24Publication Info: Pensoft Publishers 2009Subjects: Amphibia chromosome polymorphism C-positive heterochromatin blocks Karyotypes Pelophylax Rana Ranidae