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100   $a20101114d2010      ua             0
101 0 $aeng
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181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aAviation safety$b[electronic resource] $ecertification and approval processes are generally viewed as working well, but better evaluative information needed to improve efficiency : report to congressional requesters
210  1$a[Washington, D.C.] :$cU.S. Govt. Accountability Office,$d[2010]
215   $a1 online resource (ii, 35 pages) $cillustrations
300   $aTitle from PDF title screen (GAO, viewed Nov. 14, 2010).
300   $a"October 2010."
300   $a"GAO-11-14."
320   $aIncludes bibliographical references.
517   $aAviation safety 
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606   $aAirworthiness certificates$zUnited States
606   $aAirplanes$xCertification$zUnited States
606   $aAeronautical instruments$xCertification$zUnited States
615  0$aAeronautics$xSafety measures$xStandards
615  0$aAirworthiness certificates
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615  0$aAeronautical instruments$xCertification
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