The Fantastic Island

From Author Wars - https://authorwars.com/publications/the-fantastic-island-283877.html

Overview:

Title: The Fantastic Island
Author: Kenneth Robeson
Year: 1967
Publisher: Bantam Books
Price: $0.50
Pages: 135
Binding: Paperback
Type: Novel
Title Reference: The Fantastic Island
Notes: 3rd printing. Date from 7th printing of same publication & series.
Cover info from http://home.comcast.net/~man-of-bronze/index3.htm.