"The preface is an extremely important part of any book because it provides the author an opportunity to talk directly to those who are considering the appropriateness of the book's contents for their particular needs. I hope, therefore, that you will read the preface first - before you skim or read the book itself. By so doing, you can gain a quick, birds-eye view of the contents and note the relative emphasis I have given to the various topics."-----Berle Haggblade