Study of the Ukrainian Source and Archeography history of the Romanticism period in the pages of Ukrainian Diaspora periodicals von O. O. Kovalchuk

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I.F. Chernikov's 75 Birthday von O. O. Kovalchuk

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Works, Published by Doctor of History Chernikov Ihor Fedorovych (1990–2005) von O. O. Kovalchuk

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Structural and functional changes of the historical works of Romanticism period source base von O. O. Kovalchuk

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Commemorating the 80-th Anniversary of Doctor of History, Professor I.Ph.Chernikov von O. O. Kovalchuk

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