The truth about Upper Silesia : a speech made in the Polish Diet on january 28th 1921 by deputy A. Wierzbicki : a resolution was passed by the Diet to publish this speech at the expense of the nation. - Wierzbicki, Andrzej (1877-1962). (Warsaw : Diet of the Polish Republic, 1921)
Źródła i dok. s. 23-75.
Keywords: Plebiscyt -- Polska -- Śląsk, Górny (region).; Plebiscyt -- Polska -- Śląsk, Górny (region) -- propaganda; Śląsk, Górny (Polska ; region) -- 1900-1945 -- źródła