The Last Door

From Author Wars - https://authorwars.com/books/the-last-door-655257.html

Overview:

Title: The Last Door
Author: M. Yemtsew E. Parnov
Year: 1968
Type: Short Fiction

Editions/Publications:

Unknown. International Science-Fiction, June 1968 (Unknown, M. Yemtsew, Galaxy Publishing Corporation, $0.50, 132 pages, digest, MAGAZINE)
Unknown. International Science-Fiction, June 1968 (Unknown, E. Parnov, Galaxy Publishing Corporation, $0.50, 132 pages, digest, MAGAZINE)