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101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aComparison of advanced propulsion concepts for deep space exploration /$fby W.E. Moeckel
210  1$aWashington, D.C. :$cNational Aeronautics and Space Administration,$dSeptember 1972.
215   $a1 online resource (35 pages) $cillustrations
225 1 $aNASA/TN ;$vD-6968
300   $a"September 1972."
320   $aIncludes bibliographical references (pages 34-35).
606   $aAerospace vehicles$2nasat
606   $aSpace missions$2nasat
606   $aSpace vehicles$xPropulsion systems
606   $aSpace vehicles$xPropulsion systems$2fast
615  7$aAerospace vehicles.
615  7$aSpace missions.
615  0$aSpace vehicles$xPropulsion systems.
615  7$aSpace vehicles$xPropulsion systems.
700   $aMoeckel$b W. E$g(Wolfgang E.),$01407626
712 02$aUnited States.$bNational Aeronautics and Space Administration,
712 02$aLewis Research Center.
801  0$bABC
801  1$bABC
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801  2$bOCLCQ
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801  2$bOCLCQ
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906   $aBOOK
912   $a9910716550303321
996   $aComparison of advanced propulsion concepts for deep space exploration$93514141
997   $aUNINA