Closed System
From Author Wars - https://authorwars.com/publications/closed-system-191401.html
Overview:
- Title: Closed System
- Author: Zach Hughes
- Year: Unknown
- ISBN-10: 0451141709
- Publisher: Signet
- Price: $2.95
- Pages: 222
- Binding: Paperback
- Type: Novel
- Title Reference: Closed System
- Notes:
2nd printing (per number line) of 1986 Signet ed.
Spine# ISBN. Cover# 451-AE4170
The cover artist is not credited nor is a signature visible. Cover art credit per same art used & credited in Zones of Thought $3.95 in Canada.