Critical Threshold

From Author Wars - https://authorwars.com/publications/critical-threshold-185269.html

Overview:

Title: Critical Threshold
Author: Brian M. Stableford
Year: 1979
ISBN-10: 0600320413
Publisher: Hamlyn Paperbacks
Price: £0.75
Pages: 158
Binding: Paperback
Type: Novel
Title Reference: Critical Threshold
Notes:
"First published in Great Britain 1979". Month from amazon.uk Printing not stated, no number line. "Illustration: Tim White" on back cover, no visible signature. Other prices: Rep. of Ireland 82 1/2p, Australia $2.75