Penguin Books Ltd, Harmondsworth, Middlesex
Penguin Books Inc, 3300 Clipper Mill Road, Baltimore 11, Md, U.S.A.
Penguin Books Pty Ltd, Ringwood
Victoria, Australia
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First published as a Penguin Special 1962
Revised edition published in Pelican Books 1964
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Made and Printed in Great Britain
by C. Nicholls & Company Ltd
Set in Monotype Baskerville
This book is sold subject to the condition that it shall not, by way of trade, be lent, re-sold, hired out, or otherwise disposed of without the publisher’s consent in any form of binding or cover other than that in which it is published