Topical Issues of the History of Civil Officialdom in Ukraine at the End of the Eighteenth – the First Half of the Nineteenth Centuries за авторством S. I. Degtyarev

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The Correspodence between S. M. Kozhevnikov and J. P. Den Hartog as a Source for the Study of Scientific Collaboration between the Mechanicians (to the 110th Anniversary of Sergei... за авторством M. O. Pryn, O. V. Pryn, S. I. Degtyarev

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Correspondence Between the Academician Evgeny Fedorov and Tsou Yi-Hsin: Materials to the History of Latitude Investigations за авторством M. O. Pryn, O. V. Pryn, S. I. Degtyarev

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