Asimov, Isaac. <br/><br/>
The solar system and back. 

 - New York :  Doubleday,  1970. 
 - 246 p. :  ill. 
<br/><br/> "Essays". . .reprinted from the Magazine of fantasy and science fiction. 
<br/><br/><label>LCCN: </label>78089121 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Addresses and essays.
<br/><br/><label>Dewey Class. No.: </label>508