Moulton, Forest Ray <br/><br/>
Introduction to Celestial mechanics 

 - 2nd rev. ed. 
 - New York  Dover Publications  1970 
 - vii,436p.  23 cm. 
<br/><br/><label>ISBN: </label>0486646874 
<br/><br/><label>Dewey Class. No.: </label>521.1,MOU  / _