The Last Monster

From Author Wars - https://authorwars.com/publications/the-last-monster-315240.html

Overview:

Title: The Last Monster
Author: Jane Annixter, Paul Annixter
Year: 1980
ISBN-10: 0152436146
Publisher: Harcourt Brace Jovanovich
Price: $6.95
Pages: 84
Binding: Hardcover
Type: Chapter Book
Title Reference: The Last Monster
Notes: Info from Locus #238 (October 1980), based on a listing for an unseen book. This doesn't appear to be spec-fic based on the OCLC synopsis, so Locus may have mistakenly listed it based solely on the title.