Vovchukhiv operation of the Ukrainian halychyna's army (1919): background, progress, aftermath von Ya. V. Marchenko

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Foreign policy factors in the Polish-Ukrainian war in 1918–1919 von Ya. V. Marchenko

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"Non-office scientist": scientific and public-political activities of Ivan Krypiakevych during the soviet occupation of western ukrainian lands (1939 – 1941) von Ya. V. Marchenko, A. V. Trembetskyi

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