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Anatomy of a Phenomenon

First U.S. edition Chicago: Henry Regnery, 1965 Hardcover	First British edition London: Neville Spearman, 1966 Hardcover	First U.S. mass paperback New York: Ace, 1966 Hardcover
First Ballantine mass paperback New York: December, 1974	Fourth Ballantine edition New York: May, 1987	British mass paperback London: Tandem, 1974