With a work of this size and depth, it is inevitable that a printer's plate will shift, or an earlier draft will be printed in place of the later, more correct version. Simply put, even with the most exhaustive efforts, some things will slip through the cracks.

This book is no exception, and although every effort was employed to be scrupulously accurate, a few errors did manage to sneak in.

Continuing with the spirit of the book to be the most authoritative and accurate work on the subject, we have added this section of the website to be able to offer up to the minute updates and corrections, so that you can have the most accurate information available.

Please feel free to print out these pages and add them to your first edition.