Niven, Larry <br/><br/>
Ringworld / 
Larry Niven. 
 - New York:  Del Rey,  1985. 
 - 342 pages ;  18 cm. 
 - Ballantine Books science fiction .
 - Ballantine books SF .
<br/><br/> "A Del Rey book." 
<br/><br/> Two humans and two aliens, who are traveling to distant reaches of space to prevent a future catastrophe, crash on a ringworld apparently created by superior technologies 
<br/><br/><label>ISBN: </label>0345333926 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ringworld (Imaginary place)--Fiction
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Science fiction<br/>Science fiction.<br/>Fiction.<br/>Science fiction.<br/>Science fiction.
<br/><br/><label>LC Class. No.: </label>PS3564.I9