About stratigraphical dismemberment of the Upper Devonian deposits in Palaeozoic Subdobrudgean depression за авторством O. I. Berchenko

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The results of examination the modernized stratigraphycal charts of paleozoic deposits in Ukraine with paleozoic commission of National stratigraphic committee of Ukraine за авторством V. I. Polietaiev, O. I. Berchenko

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On the validity of distinguishing of some early Carboniferous genera of Dasycladates algae of the Aciculelleae Bassoullet et al. tribe (Chlorophyta) за авторством O. I. Berchenko, O. A. Sukhov

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