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The Shadow of Heaven
by Bob Shaw
ISBN 0575049162 / 9780575049161 / 0-575-04916-2
Publisher Victor Gollancz
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A revised and expanded edition of a novel first published in 1969 by an author whose others include "Orbitsville". Heaven is a giant anti-gravity floating disc. Government regulations make it almost impossible for humans on an overcrowded Earth to get there, but Vic Sterling manages it. [via]