The Search for Zero (Part 2 of 2)

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Overview:

Title: The Search for Zero (Part 2 of 2)
Author: Willy Ley
Year: 1940
Type: Essays

Editions/Publications:

Unknown. Astounding Science-Fiction, November 1940 (Unknown, Willy Ley, Street & Smith Publications, Inc., $0.20, 164 pages, pulp, MAGAZINE)
Unknown. Astounding Science-Fiction, November 1940 (Unknown, Willy Ley, Atlas Publishing and Distribution Co. Ltd, -/6, 80 pages, pulp, MAGAZINE)