For Your Information: The Drowned Civilization

From Author Wars - https://authorwars.com/books/for-your-information-the-drowned-civilization-780333.html

Overview:

Title: For Your Information: The Drowned Civilization
Author: Willy Ley
Year: 1969
Type: Essays
Series: For Your Information

Editions/Publications:

Unknown. Galaxy Magazine, April 1969 (Unknown, Willy Ley, Galaxy Publishing Corporation, $0.60, 196 pages, digest, MAGAZINE)