Asimov, Isaac,  1920-1992. <br/><br/>
The gods themselves. 

 - [1st ed.] 
 - Garden City, N.Y.,  Doubleday,  1972. 
 - 288 p.  22 cm. 
<br/><br/><label>LCCN: </label>72180055  
<br/><br/><label>LC Class. No.: </label>PZ3.A8316  / Go 
<br/><br/><label>Dewey Class. No.: </label>813/.5/4