Aerial mapping photography Gebruik van vuurkracht van de tirailleurgroep Maintanance of the coaxial line A. Warning-radar displays; B. The PPI operating penny saved, supply economy Celestial navigation for fighter pilots Celestial navigation, (vier films); A-Latitude by Polaris, B--Time, C-Star Identification, D-Landfall flight T-34 Forced landing procedures Celestial navigation, solutions of illustrative problems Sperry Gyrosyn compass Excercise scrambled VHF-DF Units
