The Last Fathom

From Author Wars - https://authorwars.com/publications/the-last-fathom-633913.html

Overview:

Title: The Last Fathom
Author: Martin Caidin
Year: 1974
ISBN-10: 0523004834
Publisher: Pinnacle Books
Price: C$1.50
Pages: 306
Binding: Paperback
Type: Novel
Title Reference: The Last Fathom
Notes:
• "First printing, November 1974"; no number line • The artist is not credited, no visible signature on the artwork • 523-230483-0 on the cover, ISBN on spine and copyright page • Cover printed in the US, book in Canada