The Entropy Effect

From Author Wars - https://authorwars.com/publications/the-entropy-effect-39249.html

Overview:

Title: The Entropy Effect
Author: Vonda N. McIntyre
Year: 1987
ISBN-10: 0671664999
Publisher: Pocket Books
Price: $3.95
Pages: 224
Binding: Paperback
Type: Novel
Title Reference: The Entropy Effect
Notes:
noted by Locus1 but no printing [likely 10th or 11th] The artist is not credited, Barlowe's 'signature' is on the artwork