Penguin Books Ltd, Harmondsworth, Middlesex
Australia: Penguin Books Pty Ltd, 762 Whitehorse Road,
Mitcham, Victoria
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First published in the U.S.A. 1960
First published in Great Britain 1963 by Penguin Books
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Copyright © Harry Harrison, 1960
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Made and printed in Great Britain
by Cox & Wyman Ltd
London, Fakenham and Reading
Set in Monotype Times
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