"M 9 (airship)" . . . . . . . . . . . . . "Giuseppe Valle" . "V 2 (airship)" . . "Accademia Aeronautica" . . . "1975" . . "1886" . . . . . . "Air Force Chief of Staff" . . . . . . . . "Giuseppe Valle (general)" . . "Giuseppe Valle (general)" . . . "M 14 (airship)" . . . "P 4 (airship)" .