00982nam0-2200313---450-99000880619040332120090213144225.0000880619FED01000880619(Aleph)000880619FED0100088061920090213d1975----km-y0itaa50------baengFRy-------001yy<<A >>survey of modern air traffic controlAndrè Benoit (program director and editor)Neuilly sur SeineAdvisory group for aerospace research and development19752 v.30 cmAGARDograph209Benoit,A.North Atlantic Treaty Organization.Advisory Group for Aerospace Research and DevelopmentITUNINARICAUNIMARCBK990008806190403321Q 143DINPAQ 144DINPADINPASurvey of modern air traffic control807331UNINA