Escobal, Pedro Ramon <br/><br/>
Methods of astrodynamics 

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 - John Wiley & Sons Inc., New York  1968 
 - 342 
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrophysics; Descriptive astronomy
<br/><br/><label>Dewey Class. No.: </label>523.01  ESC-M