01226oas 2200361 a 450 991069586310332120170609160653.0(CKB)5470000002373159(OCoLC)133081605(EXLCZ)99547000000237315920070522b19961999 sa engurmn|||||||||txtrdacontentcrdamediacrrdacarrierNAS architecture, status of ongoing activities[electronic resource][Washington, D.C.?] [Federal Aviation Administration][1996-1999]HTML fileTitle from title screen (viewed on May 22, 2007).National Airspace System architecture, status of ongoing activitiesNational Airspace System (U.S.)PlanningPeriodicalsAeronauticsUnited StatesPeriodicalsNational Airspace System (U.S.)PlanningAeronauticsUnited States.Federal Aviation Administration.GPOGPOGPOJOURNAL9910695863103321NAS architecture, status of ongoing activities3149070UNINA