Strategic air power : the pattern of dynamic security / by Stefan T. Possony military classics Surprise / Waldemar Erfurth ; trans.: Stefan T. Possony and Daniel Vilfroy military classics Defense / Ritter Wilhelm von Leeb ; [transl. by:] Stefan T. Possony and Daniel Vilfroy military classics. ii Defense / Field Marshal General Ritter von Leeb ; first translation, 1943 [by] Dr. Stefan T. Possony and Daniel Vilfroy
