Acknowledgements
The authors have consulted many sources of information including books, reports, reviews, and web sites. As the present volume is a broad-brush overview, it is not seen fit to quote detailed references. Nevertheless, our indebtedness to the work of others must be acknowledged. Similarly, we are grateful to the holders of copyright who have kindly consented to the use of their illustrations.
The assistance of Dr Jacquie Berry, Professor Neville Jackson, Dame Professor Julia King and Sir Robert Watson is gratefully acknowledged.
The authors would like to express their thanks also to their wives: Sylvia Dell, Heather Moseley and Gwen Rand, for their patient support and encouragement during the writing of this book.