LEADER 01602oam  2200457   450 
001 9910716737503321
005 20210824133903.0
035   $a(CKB)5470000002524802
035   $a(OCoLC)1154320737
035   $a(EXLCZ)995470000002524802
100   $a20200514d1938      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cn$2rdamedia
183   $anc$2rdacarrier
200 10$aNoise from propellers with symmetrical sections at zero blade angle$hII /$fby A.F. Deming
210  1$aWashington, [D.C.] :$cNational Advisory Committee for Aeronautics,$d1938.
215   $a1 online resource (14 pages, 6 unnumbered pages) $cillustrations
225 1 $aTechnical note / National Advisory Committee for Aeronautics ;$vNo. 679
300   $a"December 1938."
300   $aIncludes errata.
300   $aNo Federal Depository Library Program (FDLP) item number.
320   $aIncludes bibliographical references (page 14).
606   $aPropellers, Aerial$xNoise$xTesting
606   $aNoise$2fast
606   $aPropellers, Aerial$xTesting$2fast
615  0$aPropellers, Aerial$xNoise$xTesting.
615  7$aNoise.
615  7$aPropellers, Aerial$xTesting.
700   $aDeming$b A. F.$01391553
712 02$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   $a9910716737503321
996   $aNoise from propellers with symmetrical sections at zero blade angle$93445425
997   $aUNINA