Зеркало времени

From Author Wars - https://authorwars.com/books/zerkalo-vremeni-2290628.html

Overview:

Title: Зеркало времени
Author: Юрий Медведев
Year: 1973
Type: Short Fiction

Variant Titles:

1986. Ogledalo vremena

Resources:

FantLab page for Зеркало времени