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101 0 $aeng
200 10$aConventional and bimodal nuclear thermal rocket (NTR) artificial gravity Mars transfer vehicle concepts
210   $aCleveland, Ohio$cNational Aeronautics and Space Administration, Glenn Research Center
517   $aConventional and bimodal nuclear thermal rocket 
906   $aBOOK
912   $a9910707942403321
996   $aConventional and bimodal nuclear thermal rocket (NTR) artificial gravity Mars transfer vehicle concepts$93329086
997   $aUNINA