
Newnes
An imprint of Butterworth-Heinemann Ltd
Linacre House, Jordan Hill, Oxford OX2 8DP
~^sJ A member of the Reed Klsevier group
OXFORD LONDON BOSTON
MUNICH NEW DELHI SINGAPORE SYDNEY
TOKYO TORONTO WELLINGTON
First published 1940
Second edition 1944
Third edition 1947
Fourth edition 1954
Fifth edition 1957
Sixth edition 1967
Seventh edition 1969
Reprinted 1975, 1976, 1979
Eighth edition 1983
Reprinted with revisions 1985
Ninth edition 1989
Reprinted 1989, 1991, 1992
Tenth edition 1992
Reprinted 1993
© Butterworth-Heinemann Ltd 1989, 1992
All rights reserved. No part of this publication
may be reproduced in any material form (including
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