LEADER 01610oam 2200469I 450 001 9910713452203321 005 20200427135829.0 035 $a(CKB)5470000002501131 035 $a(OCoLC)1117765905 035 $a(EXLCZ)995470000002501131 100 $a20190909d1923 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aInfluence of ribs on strength of spars /$fby L. Ballenstedt 210 1$a[Washington, D.C.] :$cNational Advisory Committee for Aeronautics,$d1923. 215 $a1 online resource (18 pages, 6 unnumbered pages) $cillustrations 225 1 $aTechnical notes / National Advisory Committee for Aeronautics ;$vNo. 139 300 $a"May 1923." 300 $a"From Technische Berichte, Vol. III, No. 4." 300 $a"Translated by National Advisory Committee for Aeronautics"--Page 18. 300 $aNo Federal Depository Library Program (FDLP) item number. 320 $aIncludes bibliographical references. 606 $aAirplanes$xWings 606 $aStruts (Engineering) 606 $aAirplanes$xWings$2fast 615 0$aAirplanes$xWings. 615 0$aStruts (Engineering) 615 7$aAirplanes$xWings. 700 $aBallenstedt$b L.$01403856 712 02$aUnited States.$bNational Advisory Committee for Aeronautics, 801 0$bTRAAL 801 1$bTRAAL 801 2$bOCLCO 801 2$bOCLCF 801 2$bGPO 906 $aBOOK 912 $a9910713452203321 996 $aInfluence of ribs on strength of spars$93477297 997 $aUNINA