Niven, Larry <br/><br/>
Footfall / 
L. Niven, J. Pournelle. 
 - 1st ed. 
 - New York :  A Del Rey Book ;  Ballantine Books,  1985. 
 - xxiii, 495 p. ;  25 cm. 
<br/><br/> "A Del Rey Book" 
<br/><br/><label>ISBN: </label>0-345-32347-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science fiction