Shadow of the Mutant Master

From Author Wars - https://authorwars.com/books/shadow-of-the-mutant-master-904163.html

Overview:

Title: Shadow of the Mutant Master
Author: Kurt Brand
Year: 1974
Type: Short Fiction

Editions/Publications:

Unknown. Perry Rhodan #47: Shadow of the Mutant Master (Unknown, Kurt Brand, Ace Books, $0.95, 164 pages, Paperback, MAGAZINE)