Garden City, NY: Doubleday, 1982. dj. Hardcover first edition - Fourth novel in the Foundation series, written many years after the original trilogy to both acclaim (it won the 1983 Hugo award and was a finalist for the Nebula) and to popularity, the first of Asimov's many books to land on the NY Times best seller list. Code M39 on p 365. . ISBN: 0-385-177259.