Gas : carry this card with you at all times and read it frequently Sojuza Sovetskich Socialističeskich Respublik 1917-1967 / [Glavnyi redaktor B. A. Vvedenski] History of the German night fighter force, 1917-1945 / Gebhard Aders ; [transl. from the German and ed. by Alex Vanags-Baginskis assisted by Brendan Gallagher]
