LEADER 01352nam  2200445   450 
001 9910715218803321
005 20210201123135.0
035   $a(CKB)5470000002509839
035   $a(OCoLC)1235811433
035   $a(EXLCZ)995470000002509839
100   $a20210201j197910    ua             0
101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aMaterials for helicopter gears
210  1$a[Washington, D.C.] :$cNational Aeronautics and Space Administration,$dOctober 1979.
215   $a1 online resource (x, 89 pages) $cillustrations
225 1 $aNASA/CR ;$v163068
300   $a"October 1979."
300   $a"NMAB-351."
300   $a"NF02052."
320   $aIncludes bibliographical references (pages 87-89).
606   $aAircraft design$2nasat
606   $aAlloys$2nasat
606   $aHelicopters$2nasat
606   $aCarburizing$2nasat
615  7$aAircraft design.
615  7$aAlloys.
615  7$aHelicopters.
615  7$aCarburizing.
712 02$aUnited States.$bNational Aeronautics and Space Administration,
712 02$aNational Materials Advisory Board (U.S.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910715218803321
996   $aMaterials for helicopter gears$93313200
997   $aUNINA