Preface to Second Edition

It has been very pleasing to see the acceptance of the first edition of this book. However, almost as soon as the manuscript had been sent to the publishers, I found myself compiling a list of ways in which it could be improved. These involved clarification of detail, the discovery of exceptions to generalizations, the rapid advance of knowledge, and correction of errors.

It is said that the best way to neutralize a scientific opponent is to make sure he or she writes a book. I have therefore chosen to update the book selectively, concentrating on areas of practical importance, rather than attempting to give the last word on each of the many topics covered.

Once again, I ask the reader of this book to offer suggestions, criticism or correction.

James W. Goding

Melbourne, January 1985

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