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100   $a20150722d2015      ua             0
101 0 $aeng
135   $aurbn||||a||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aNextGen $ea review of progress, challenges, and opportunities for improving aviation safety and efficiency : hearing before the Subcommittee on Aviation Operations, Safety, and Security of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Thirteenth Congress, second session, June 25, 2014
210  1$aWashington :$cU.S. Government Publishing Office,$d2015.
215   $a1 online resource (iii, 51 pages)
225 1 $aS. hrg. ;$v113-669
300   $aTitle from title screen (viewed on July 22, 2015).
300   $aPaper version available for sale by the Superintendent of Documents, United States Government Publishing Office.
320   $aIncludes bibliographical references.
517   $aNextGen 
606   $aAir traffic control$zUnited States$xAutomation
606   $aAir traffic control$xTechnological innovations$zUnited States
606   $aAeronautics, Commercial$xEconomic aspects$zUnited States
606   $aAeronautics$zUnited States$xSafety measures
606   $aAirplanes$xFuel$xEconomic aspects$zUnited States
608   $aLegislative hearings.$2lcgft
615  0$aAir traffic control$xAutomation.
615  0$aAir traffic control$xTechnological innovations
615  0$aAeronautics, Commercial$xEconomic aspects
615  0$aAeronautics$xSafety measures.
615  0$aAirplanes$xFuel$xEconomic aspects
801  0$bGPO
801  1$bGPO
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906   $aBOOK
912   $a9910703847703321
996   $aNextGen$93466511
997   $aUNINA