Sagan, Carl,   1934-1996. <br/><br/>
Shadows of forgotten ancestors :  a search for who we are / 
Carl Sagan, Ann Druyan. 
 - New York :  Random House,  1992. 
 - xvi, 505 p. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>009182589X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life--Origin
<br/><br/><label>LC Class. No.: </label>QH325