Comets

From Author Wars - https://authorwars.com/books/comets-117815.html

Overview:

Title: Comets
Author: Willy Ley
Year: 1952
Type: Essays

Editions/Publications:

Unknown. Astounding Science Fiction, July 1952 (Unknown, Willy Ley, Street & Smith Publications, Inc., $0.35, 172 pages, digest, MAGAZINE)