Back to the Stone Age

From Author Wars - https://authorwars.com/books/back-to-the-stone-age-3081629.html

Overview:

Title: Back to the Stone Age
Author: Chris Achilleos
Year: 1975
Type: Interior Art

Editions/Publications:

Unknown. Edgar Rice Burroughs (Unknown, Chris Achilleos, New English Library, 32 pages, Trade Paperback, Non-fiction)