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101 0 $aeng
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181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aAir traffic control$b[electronic resource] $esystem management capabilities improved, but more can be done to institutionalize improvements : report to congressional committees
210  1$a[Washington, D.C.] :$cU.S. Government Accountability Office,$d[2004]
300   $aTitle from title screen (viewed on Dec. 28, 2004).
300   $a"August 2004."
300   $aPaper version available from: U.S. Government Accountability Office, 441 G St., NW, Rm. LM, Washington, D.C. 20548.
300   $a"GAO-04-901."
320   $aIncludes bibliographical references.
517   $aAir traffic control 
606   $aAir traffic control$zUnited States$xComputer programs$xEvaluation
615  0$aAir traffic control$xComputer programs$xEvaluation.
801  0$bGPO
801  1$bGPO
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912   $a9910693152003321
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997   $aUNINA