helis.com. 2 February 2014時点のオリジナルよりアーカイブ。12 March 2013閲覧。 ^ “Lorenzana, Polish firm inks contract for 32 Black Hawk choppers”. INQUIRER.net (2022年2月22日)
territory of the USSR in 1941, including Polish territories annexed in 1939–40.) ^ “United States Holocaust Memorial Museum. Holocaust Encyclopedia "Persecution