A face do abismo

From Author Wars - https://authorwars.com/books/a-face-do-abismo-2752792.html

Overview:

Title: A face do abismo
Author: Fred Saberhagen
Year: 1974
Type: Short Fiction

Editions/Publications:

Unknown. As máquinas da destruição (Unknown, Fred Saberhagen, Livros do Brasil, 182 pages, Paperback, Collection)