Koreś D, Szewczyk R. The Stahlhelm convention in Wrocław on 30–31 May 1931 in the records of the Second Division of the General Staff of the Polish Armed Forces. ep [Internet]. 2019 Dec. 15 [cited 2026 Nov. 12];(XX/1). Available from: https://czasopisma.uwm.edu.pl/index.php/ep/article/view/4849