Puzzle of the Space Pyramids

From Author Wars - https://authorwars.com/books/puzzle-of-the-space-pyramids-4574.html

Overview:

Title: Puzzle of the Space Pyramids
Author: Otto Binder
Year: 1971
Type: Novels

Variant Titles:

1971. Puzzle of the Space Pyramids

Resources:

English Wikipedia article on Puzzle of the Space Pyramids