The Beasts Below

From Author Wars - https://authorwars.com/books/the-beasts-below-904427.html

Overview:

Title: The Beasts Below
Author: Kurt Mahr
Year: 1979
Type: Short Fiction

Editions/Publications:

Unknown. Perry Rhodan #128: The Beasts Below (Unknown, Kurt Mahr, Master Publications, ISBN-10: , $1.95, 68 pages, digest, MAGAZINE)