Asimov, Isaac <br/><br/>
Pebble in the sky 
/ Isaac Asimov 
 - London :  Grafton Books;  1987 
 - 226 p. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>9780586069523 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pebble--Sky
<br/><br/><label>Dewey Class. No.: </label>813.54  / As428