El fin de la raza

From Author Wars - https://authorwars.com/books/el-fin-de-la-raza-2246876.html

Overview:

Title: El fin de la raza
Author: Lester del Rey
Year: 1957
Type: Short Fiction

Editions/Publications:

Unknown. ... Y algunos eran humanos (Unknown, Lester del Rey, E.D.H.A.S.A., ISBN-10: , 238 pages, Paperback, Collection)