The Last Gasp

From Author Wars - https://authorwars.com/publications/the-last-gasp-42767.html

Overview:

Title: The Last Gasp
Author: Trevor Hoyle
Year: 1984
Publisher: Crown Publishers / SFBC
Price: $5.50
Pages: 496
Binding: Hardcover
Type: Novel
Title Reference: The Last Gasp
Notes: This book club edition printed by Doubleday may not have been a selection of the SFBC. It is not included in the lists provided by SFBC editor Andrew Wheeler which were posted on the rec.arts.sf.written newsgroup. Its listing here is based on its listing in the Locus1 database which supplies the given date and price (not stated in the publication).
Gutter Code "O01" on page 493 would indicate a printing date of the first week in 1984 which means it was probably available as a selection to other Doubleday book clubs before the date given by Locus1.