Roy, Archie E. <br/><br/>
The foundations of astrodynamics 
Archie E.  Roy                                              
 - New York  Macmillan  1965 
 - xiv, 385p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrodynamics<br/>Astronomy and astrophysics thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>521.1  / ROY