Wróbel P. On the problem of an NKVD residentura (residency) in the Ghetto of Warsaw, 1941–1942. pis [Internet]. 2005 Dec. 30 [cited 2026 Nov. 13];8(2):197-216. Available from: https://czasopisma.ipn.gov.pl/index.php/pis/article/view/603