If ... and When (If, March 1969)

From Author Wars - https://authorwars.com/books/if--and-when-if-march-1969-117288.html

Overview:

Title: If ... and When (If, March 1969)
Author: Lester del Rey
Year: 1969
Type: Essays

Editions/Publications:

Unknown. If, March 1969 (Unknown, Lester del Rey, Galaxy Publishing Corporation, $0.60, 164 pages, digest, MAGAZINE)