000129457 1909-1990 1925- 1939-1945 20thcentury administration aleksandraronovich belzec(concentrationcamp) bełżec(concentrationcamp) bialowitz biography chelmno(concentrationcamp) collectivememory concentrationcampescapes concentrationcampinmates concentrationcamps excavations(archaeology) history holocaust holocaustsurvivors izbicalubelska jewish(1939-1945) jewishresistance jews pecherskiĭ personalnarratives philip pictorialworks poland politicsandgovernment sobibór sovietunion treblinka(concentrationcamp) worldwar