Kate Williams

Butterworth-Heinemann is an imprint of Elsevier
Linacre House, Jordan Hill, Oxford OX2 8DP
30 Corporate Drive, Suite 400, Burlington, MA 01803, USA

First edition 1999
Second edition 2004
Third edition 2006

Copyright 1999, Bob Johnson. All rights reserved.
Copyright 2004, 2006, Kate Williams. Published by Elsevier Ltd. All rights reserved

The right of Kate Williams to be identified as the author of this work has been asserted in accordance with the Copyright, Designs and Patents Act 1988

No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise without the prior written permission of the publisher

Permissions may be sought directly from Elsevier's Science & Technology Rights Department in Oxford, UK: phone ( 44) (0) 1865 843830; fax ( 44) (0) 1865 853333; email: permissions@elsevier.com. Alternatively you can submit your request online by visiting the Elsevier web site at http://elsevier.com/locate/permissions, and selecting
Obtaining permission to use Elsevier material

British Library Cataloguing in Publication Data
A catalogue record for this book is available from the British Library

Library of Congress Cataloguing in Publication Data
A catalogue record for this book is available from the Library of Congress

ISBN 13: 978-0-7506-6880-4
ISBN 10: 0-7506-6880-6

Typeset by Charon Tec Ltd, Chennai, India
www.charontec.com

06 07 08 09 10 10 9 8 7 6 5 4 3 2...