Suk P, Grabiński T. The disclosure of mass graves in Katyn and the Polish question in press of the Protectorate of Bohemia and Moravia between April and June 1943. pis [Internet]. 2005 Dec. 30 [cited 2026 Nov. 13];8(2):237-55. Available from: https://czasopisma.ipn.gov.pl/index.php/pis/article/view/605