Penguin Books Ltd, Harmondsworth, Middlesex, England Penguin Books Pty Ltd, Ringwood, Victoria, Australia
First published in the U.S.A. 1950 Published in Great Britain by Imago Publishing Company 1951 Revised edition published by the Hogarth Press 1965 Published in Penguin Books 1965
Copyright © W. W. Norton & Co. Inc.
Made and printed in Great Britain by C. Nicholls & Company Ltd Set in Monotype Garamond
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