PUBLISHED BY THE PRESS SYNDICATE OF THE UNIVERSITY OF CAMBRIDGE The Pitt Building Trumpington Street, Cambridge CB2 IRP, United Kingdon CAMESRIUGE UNIVERSITY PRESS The Edinburgh Building, Cambridge CB2 2RU, UK 40 West 20th Street, New York, NY 10011-4211, USA [0 Stamford Road, Oakleigh, VIC 3166, Australia Ruiz de alarcon 13, 28014 Madrid, Spam Dock House, The Waterfront, Cape Town 8001, South Africa http://www.cambridge.org C Cambridge University Press 1999 Seventh printing 2002 Printed in Great Britain by Bemrose Security Printing A catalogue record for this book is available from the british library IsBn 0-521-49868-6(with answers) ISBN 0-521-49869-4(without answers) Copyright The law allows a reader to make a single copy of part of a book for the purposes of private study. It does not allow the copying of entire books or the making of multiple copies of extracts. Written permission for any such copying must always be obtained from the publisher in advancPUBLISHED BY THE PRESS SYNDICATE OF THE UNIVERSITY OF CAMBRIDGE The Pitt Building,Trumpmgton Street, Cambridge CB2 1RP, United Kingdom CAMBRIDGE, UNIVRRSITY PRESS The Edinburgh Building, Cambridge CB2 2RU, UK 40 West 20th Street, New York, NY 10011-4211, USA 10 Stamford Road, Oakleigh,VIC 3166, Australia Ruiz de Alarcon 13, 28014 Madrid, Spam Dock House, The Waterfront, Cape Town 8001, South Africa http://www.cambridge.org © Cambridge University Press 1999 First published 1999 Seventh printing 2002 Printed in Great Britain by Denirose Security Printing A catalogue record for this book is available from the British Library. ISBN 0-521-49868-6 (with answers) ISBN 0-521-49869-4 (without answers) Copyright The law allows a reader to make a single copy of part of a book for the purposes of private study. It does not allow the copying of entire books or the making of multiple copies of extracts. Written permission for any such copying must always be obtained from the publisher in advance