Asimov, Isaac,  1920-1992 <br/><br/>
Pebble in the sky / 
Isaac Asimov. 
 - 186 pages ;  21 cm 
<br/><br/><label>ISBN: </label>0593160045 9780593160046 
<br/><br/><label>LCCN: </label>2022285251 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time travel--Fiction<br/>Life on other planets--Fiction.<br/>Dystopias
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Fiction<br/>Science fiction
<br/><br/><label>LC Class. No.: </label>PS3551.S5  / P4 1972