Penguin Education by arrangement with the British Broadcasting Corporation
Penguin Education A Division of Penguin Books Ltd, Harmondsworth, Middlesex, England Penguin Books Australia Ltd, Ringwood, Victoria, Australia
First published by the BBC 1971 Published by Penguin Education 1973 Copyright © British Broadcasting Corporation, 1971, 1973 Illustrations copyright © Penguin Education, 1973
Filmset in Monophoto Apollo by Oliver Burrdige Filmsetting Ltd, Crawley Colour reproduction and printing by W. S. Cowell, 8 Butter Market, Ipswich
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 prior 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