Formation highest authorities of the Polish Republic after independence (1918-1920) by V. Boiechko

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The organizational incipience of the left encampment of the Political powers of Poland end of the XIXth – the 20th of the XX century by V. Boiechko

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The condition of the Polish lands consisting of States-Empires at the beginning of the XXth century by V. Boiechko

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The peculiarities of the formation of the political parties in the process of the revival of the Polish statehood by V. Boiechko

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About the elections of the city otaman in the Hrun hundred of the Gadyach regiment during the period of the hetmanship of Kyrylo Rozumovsky by I. Petrenko, O. Siry, V. Boiechko

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