Twilight World

From Author Wars - https://authorwars.com/publications/twilight-world-52571.html

Overview:

Title: Twilight World
Author: Poul Anderson
Year: 1987
ISBN-10: 0722112882
Publisher: Sphere Books
Price: £2.50
Pages: 180
Binding: Paperback
Type: Collection
Title Reference: Twilight World
Notes:
Date of publication from Locus1, which notes that the stated date is 1986.