Published by the Press Syndicate of the University of Cambridge
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© Cambridge University Press 1995
First published 1995
Reprinted 1996 (thrice)
Library of Congess Cataloging-in-Publication Data is available.
A catalog record for this book is available from the British Library.
ISBN 0-521-49714-0 hardback
ISBN 0-521-49774-4 paperback
Transferred to digital printing 2002