Ritterkreuzträger der Deutschen Panzerdivisionen 1939-1945 : die Panzertruppe V-2 / by Walter Dornberger ; transl. [from the German] by James Cleugh and Geoffrey Halliday ; introd. by Willy Ley Hitler's terror weapons : the price of vengeance / Roy Irons ; forew. by Richard Overy