Adamczewski P. Jusuf-bek Umaszew and the importance of the Caucasus for Polish intelligence services during World War II in view of documents kept in Polish archives in London. SzDR [Internet]. 17 listopad 2020 [cytowane 19 październik 2024];55(3):57-73. Dostępne na: https://apcz.umk.pl/SDR/article/view/SDR.2020.EN5.03