A need to know [elektronický zdroj] : the role of Air Force reconnaissance in war planning, 1945-1953 / John Thomas Farquhar..    Maxwell Air Force Base, Ala. : Air University Press, 2004. . 1 online resource (xxiii, 210 p.) ill., maps. . ISBN 9781429455718 (electronic bk.). ISBN 1429455713 (electronic bk.)