The Ringworld Engineers

From Author Wars - https://authorwars.com/publications/the-ringworld-engineers-564695.html

Overview:

Title: The Ringworld Engineers
Author: Larry Niven
Year: 1985
ISBN-10: 0345334302
Publisher: Del Rey / Ballantine
Price: C$4.75
Pages: xi+355
Binding: Paperback
Type: Novel
Title Reference: The Ringworld Engineers
Notes:
• "Ninth printing: October 1985"; no number line • "Map by Diane Duane", signed Duane (after Niven and Wu) • "Cover art by Dale Gustafson", no visible signature on the artwork • Cover printed in the US, book in Canada