If ... and When (If, December 1968)

From Author Wars - https://authorwars.com/books/if--and-when-if-december-1968-117283.html

Overview:

Title: If ... and When (If, December 1968)
Author: Lester del Rey
Year: 1968
Type: Essays

Editions/Publications:

Unknown. If, December 1968 (Unknown, Lester del Rey, Galaxy Publishing Corporation, $0.60, 164 pages, digest, MAGAZINE)