For Your Information: The 7-Cornered Polygon

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Overview:

Title: For Your Information: The 7-Cornered Polygon
Author: Willy Ley
Year: 1954
Type: Essays
Series: For Your Information

Editions/Publications:

Unknown. Galaxy Science Fiction, March 1954 (Unknown, Willy Ley, Galaxy Publishing Corporation, $0.35, 164 pages, digest, MAGAZINE)
Unknown. Galaxy Science Fiction [UK], No. 17 (Unknown, Willy Ley, Strato Publications, 1/6, 132 pages, digest, MAGAZINE)