LEADER 01457oam  2200421   450 
001 9910716994803321
005 20211025135518.0
035   $a(CKB)5470000002526244
035   $a(OCoLC)1154320735
035   $a(EXLCZ)995470000002526244
100   $a20200514d1938      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aTests of a contra-propeller for aircraft /$fby William M. Benson
210  1$aWashington, [D.C.] :$cNational Advisory Committee for Aeronautics,$d1938.
215   $a1 online resource (13 pages, 9 unnumbered pages) $cillustrations
225 1 $aTechnical note / National Advisory Committee for Aeronautics ;$vNo. 677
300   $a"November 1938."
300   $aNo Federal Depository Library Program (FDLP) item number.
320   $aIncludes bibliographical references (page 11).
606   $aPropellers, Aerial$xTesting
606   $aPropellers, Aerial$xTesting$2fast
615  0$aPropellers, Aerial$xTesting.
615  7$aPropellers, Aerial$xTesting.
700   $aBenson$b William M.$01392760
712 02$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   $a9910716994803321
996   $aTests of a contra-propeller for aircraft$93510962
997   $aUNINA