Dixon, Robert T. <br/><br/>
Dynamic astronomy / 
Robert T. Dixon. 
 - 3rd ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1980. 
 - xv, 524 p. :  [4] leaves of plates : ill. ;  23 cm. 
 - 520 .
<br/><br/>Includes bibliogr. references and index 
<br/><br/><label>ISBN: </label>0132212676 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Աստղագիտություն
<br/><br/><label>Dewey Class. No.: </label>520