Day of the Giants

From Author Wars - https://authorwars.com/publications/day-of-the-giants-250543.html

Overview:

Title: Day of the Giants
Author: Lester del Rey
Year: Unknown
Publisher: Airmont Books
Price: $1.50
Pages: 128
Binding: Paperback
Type: Novel
Title Reference: Day of the Giants
Notes:
- No stated date of publication.
- Unlike earlier reprintings, there is no date code on the last page of text. This was probably published in the mid-late 1970s.
- The cover art is not credited nor is there a signature visible.