De, K. K. <br/><br/>
Elements of astronomy 

 - Calcutta  Book Syndicate  1970 
 - 217p. 
<br/><br/><label>ISBN: </label> 7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy
<br/><br/><label>Dewey Class. No.: </label>520  / DE