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100   $a20100810d2010      ua             0
101 0 $aeng
135   $aurbn||||a||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aGPS$b[electronic resource] $ecan we avoid a gap in service? : hearing before the Subcommittee on National Security and Foreign Affairs of the Committee on Oversight and Government Reform, House of Representatives, One Hundred Eleventh Congress, first session, May 7, 2009
210  1$aWashington :$cU.S. G.P.O.,$d2010.
215   $a1 online resource (iii, 128 pages) $cillustrations
300   $aTitle from title screen (viewed on Aug. 10, 2010).
300   $aPaper version available for sale by the Supt. of Docs., U.S. G.P.O.
300   $a"Serial no. 111-44."
517   $aGPS 
606   $aGlobal Positioning System
606   $aArtificial satellites in navigation$zUnited States
607   $aUnited States$xArmed Forces$xProcurement
615  0$aGlobal Positioning System.
615  0$aArtificial satellites in navigation
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801  1$bGPO
801  2$bGPO
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912   $a9910703100403321
996   $aGPS$9352256
997   $aUNINA