Niven, Larry. <br/><br/>
The ringworld engineers / 
by Larry Niven. 
 - New York, N.Y. :  Ballantine Books,  1980. 
 - x, 354 p. 
 - A Del Rey Book. .
<br/><br/><label>ISBN: </label>0341260090 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fiction--Science fiction--General.