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100   $a20080102d2007      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aAir traffic control$b[electronic resource] $eFAA reports progress in system acquisitions, but changes in performance measurement could improve usefulness of information : report to congressional requesters
210  1$a[Washington, D.C.] :$cU.S. Govt. Accountability Office,$d[2007]
215   $aii, 33 pages $cdigital, PDF file
300   $aTitle from title screen (viewed on Dec. 31, 2007).
300   $a"December 2007."
300   $aPaper version available from: U.S. Govt. Accountability Office, 441 G St., NW, Rm. LM, Washington, D.C. 20548.
300   $a"GAO-08-42."
320   $aIncludes bibliographical references.
517   $aAir traffic control 
606   $aAir traffic control$zUnited States$xPlanning
615  0$aAir traffic control$xPlanning.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910696381703321
996   $aAir Traffic Control$92049120
997   $aUNINA