Penguin Books Ltd, Harmondsworth, Middlesex
Penguin Books Australia Ltd, Ringwood, Victoria, Australia
__
First published in the U.S.A. by McGraw-Hill 1965
Published in Great Britain by Penguin Books 1968
__
Copyright © McGraw-Hill, 1965, 1968
__
Made and printed in Great Britain
by Richard Clay (The Chaucer Press) Ltd,
Bungay, Suffolk
Set in Monotype Times
This book is sold subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out, or otherwise circulated without the publisher’s consent in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser