Ringworld /

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.

Bibliographic Details

Main Author:	Niven, Larry
Format:	Book
Language:	English
Published:	New York : Ballantine Books, 1970.
Series:	Ballantine books SF.
Subjects:	Ringworld (Imaginary place) > Fiction. Ringworld (Imaginary place) Fiction. Science fiction.
Online Access:	No longer valid when searched 5/11/16.