Sagan, Carl.  Druyan, Ann. <br/><br/>
Comet  x 

 - x 
 - New York  Random House  1985 
 - xiv, 396 
<br/><br/>Includes 
<br/><br/><label>ISBN: </label>0394549082 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comet Comet 
<br/><br/><label>Dewey Class. No.: </label>523.6/S129c