John Watkinson

Focal Press

OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI

Focal Press

An imprint of Butterworth-Heinemann Linacre House, Jordan Hill, Oxford OX2 8DP 225 Wildwood Avenue, Woburn, MA 01801-2041 A division of Reed Educational and Professional Publishing Ltd

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First published 2001

John Watkinson 2001

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ISBN 0 240 51656 7

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For Howard and Matthew

Acknowledgements

Information for this book has come from a number of sources to whom I am indebted. The publications of the ISO,...