The Killing Ground

From Author Wars - https://authorwars.com/books/the-killing-ground-1370290.html

Overview:

Title: The Killing Ground
Author: Dean
Year: 1969
Type: Interior Art

Editions/Publications:

Unknown. The Science Fiction Book: An Illustrated History (Unknown, Dean, New American Library, $6.95, 160 pages, Trade Paperback, Non-fiction)