Description Heroic poetry of Ancient Rus / Spiridonov VS (ed.). - Leningrad: State Publishing House of Literary Literature, 1944. - sk. 20,21 = sk. 32, 33 is the defect of the publication. . Source of the electronic copy: Transbaikalian KUNB Publisher Ленинград : Государственное Издательство Художественной Литературы
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