NASA  / TN D-6968 <br/>
Moeckel,W E <br/>
       COMPARISON OF ADVANCED PROPULSION CONCEPTS FOR DEEP SPACE EXPLORATION 
 / 
 .-  Nasa, Washington, D.C.,  1972 
 .- 35 . 
<br/>Bound With Nasa Tn D-6960-6967, 6969 
<br><U>Copy Details:</u><br> Acc. No.: <b>TR12422</b>, Full Call No.: NASA TN D-6968,   Item type:  Technical Report , Location: General Stacks, <br><b>------------------------- --------------------- ------ --------- ------- ------- --------- -------- </b><br>