Sofia committee of AUAC: archaeological explorations in Sofia Kyivska in 1920-th von O. I. Bon

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Oleksa Novytskyi and Serhiy Hamchenko: the daily routine of the scientist in 1920th according to the epistolary sources von O. I. Bon

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Ostap Vyshnia under the DPU's survailance in 1920s von O. I. Bon

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The humanitarian intelligence of Soviet Kyiv in the 1920s in the ego-documents of the writer Oleksa Varavva von O. I. Bon

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"In this amazing dawn of our – our lost – capital” (Mykola Khvyliovyi in Oleksa Varavva's memoirs) von O. I. Bon

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