Nova and Supernova

From Author Wars - https://authorwars.com/books/nova-and-supernova-129981.html

Overview:

Title: Nova and Supernova
Author: A. E. Roy
Year: 1958
Type: Essays

Editions/Publications:

Unknown. Nebula Science Fiction, Number 35 (Unknown, A. E. Roy, Peter Hamilton, 2/-, 112 pages, digest, MAGAZINE)
Unknown. Nebula Science Fiction [US], February 1959 (Unknown, A. E. Roy, Peter Hamilton, $0.35, 112 pages, digest, MAGAZINE)