Social portrait of the chekists of the first half of the 1920s (Material on the Kharkov CHEKA – GPU) von V. P. Skrypchuk

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Socio-Cultural And Ethical Aspects Of The Daily Activities Of The Kharkov KGB During The NEP von V. P. Skrypchuk

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Main aspects of forming the water resources market in Ukraine von P. Skrypchuk, O. Suduk

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