Voron Olena Petrivna. The contribution of Czechoslovakian public organizations info the social and political life of the state in 1918-1938. : к.і.н. : spec.. 07.00.02 - Всесвітня історія : presented. 2010-09-14; popup.evolution: .; Southslavonic Institute Kyivskiy Slavistychniy University. – , 0410U005473.

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