Closed System

From Author Wars - https://authorwars.com/publications/closed-system-421276.html

Overview:

Title: Closed System
Author: Zach Hughes
Year: 1986
ISBN-10: 0451141709
Publisher: Signet / New American Library of Canada
Price: C$3.95
Pages: 222
Binding: Paperback
Type: Novel
Title Reference: Closed System
Notes:
• "First Printing, March, 1986/23456789" • First Canadian printing [not stated] • As with first Canadian DAWs the New American Library of Canada also printed Signet editions from late '80 until 1987 and the number lines start with '2' • The artist is not credited, no visible signature on the artwork. Cover art credit per same art used & credited in Zones of Thought • $2.95 in the US • Cover printed in the US, book in Canada