Qué difícil es ser Dios

From Author Wars - https://authorwars.com/publications/que-dificil-es-ser-dios-658894.html

Overview:

Title: Qué difícil es ser Dios
Author: Arkadi Strugatski, Boris Strugatski
Year: 1975
ISBN-10: 8470021877
Publisher: Acervo
Pages: 248
Binding: Hardcover
Type: Novel
Title Reference: Qué difícil es ser Dios
Notes: Data from La Tercera Fundación and Términus Trántor as of 2018-03-23. The two sources show different cover art.