LEADER 01651nam 2200469Ia 450 001 9910711144803321 005 20180711121000.0 024 8 $aGOVPUB-C13-1f44d4f1b812770bf357e0077257c9ac 035 $a(CKB)5470000002480564 035 $a(OCoLC)959982809 035 $a(OCoLC)995470000002480564 035 $a(EXLCZ)995470000002480564 100 $a20161006d1954 ua 0 101 0 $aeng 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aImprovement of visual aids for air navigation $eprogress report March 1, 1954 to June 30, 1954 /$fF.C. Breckenridge 210 1$aGaithersburg, MD :$cU.S. Dept. of Commerce, National Institute of Standards and Technology,$d1954. 215 $a1 online resource 225 1 $aNBS report ;$v3647 300 $a1954. 300 $aContributed record: Metadata reviewed, not verified. Some fields updated by batch processes. 300 $aTitle from PDF title page. 320 $aIncludes bibliographical references. 517 $aImprovement of visual aids for air navigation 606 $aLanding aids (Aeronautics) 606 $aLanding aids (Aeronautics)$2fast 615 0$aLanding aids (Aeronautics) 615 7$aLanding aids (Aeronautics) 700 $aBreckenridge$b F. C$01400233 701 $aBreckenridge$b F. C$01400233 712 02$aUnited States.$bNational Bureau of Standards. 801 0$bNBS 801 1$bNBS 801 2$bOCLCO 801 2$bOCLCF 801 2$bOCLCQ 906 $aBOOK 912 $a9910711144803321 996 $aImprovement of visual aids for air navigation$93498944 997 $aUNINA