Sagan, Carl <br/><br/>
Billions and billions :  thoughts on life and death at the brink of the millennium / 
Carl Sagan 
 - New York :  Random House,  c1997. 
 - xii, 296 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0345379187 9780345379184 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Miscellanea--Popular works.<br/>Science.
<br/><br/><label>Dewey Class. No.: </label>500  / SAG