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100   $a20090121d1977      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aGeneral aviation procedures for flight in North Atlantic minimum navigation performance specifications airspace$b[electronic resource]
210  1$a[Washington, D.C.] :$cDept. of Transportation, Federal Aviation Administration,$d[1977]
215   $a1 volume (various pagings) $cdigital, PDF file
225 1 $aAdvisory circular ;$vAC no. 91-49
300   $aTitle from PDF caption (viewed Jan. 21, 2009).
300   $a"8/23/77."
606   $aAirplanes$xPiloting$xCertification$zNorth Atlantic Region
606   $aAirplanes$xPerformance$xCertification$zNorth Atlantic Region
615  0$aAirplanes$xPiloting$xCertification
615  0$aAirplanes$xPerformance$xCertification
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910697928403321
996   $aGeneral aviation procedures for flight in North Atlantic minimum navigation performance specifications airspace$93121577
997   $aUNINA