Space trajectories:  symposium/ 
Sponsored by American Astronautical society and radiation incorporated, edited by, T.C. Helvey 
 - New york:  Academic Press,  c1960 
 - x, 298 p.:  ill.;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Space trajectories--Congresses<br/>Astrodynamics--Congresses<br/>Space flight--Congresses
<br/><br/><label>Dewey Class. No.: </label>629.435082