Asimov Isaac <br/><br/>
El principio y el fin 
Isaac Asimav. 
 - Buenos Aires  Editorial Sudamericana  1979. 
 - 321 p. 
<br/><br/> Translation of : The beginning and the end. 
<br/><br/><label>LCCN: </label>fel36002082  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Collected works.
<br/><br/><label>LC Class. No.: </label>Q113  / .A83 
<br/><br/><label>Dewey Class. No.: </label>508