The risk of survival : the rescue of the Jews by the Poles and the tragic consequences for the Ulma family from Markowa / Mateusz Szpytma ; [transl. by Aleksandra Rodzińska-Chojnowska] ; Institute of National Rememberance. Commission of the Prosecution of Crimes Against the Polish Nation. - Szpytma, Mateusz (1975- ). ("Whoever Saves a Life...", 2009)