Eleven stories. 'The Sentinel', the last story, was the basis for the author's screenplay of 2001: A Space Odyssey, '... I was curious to know what kind of rock could be shining so brightly up there ,,,', we'd find out fifteen years later. Together with the first day cover for 2000 issue of the Isle of Man 50p. stamp commemorating the author's later novel version, signed by Arthur C.Clarke
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