The definitive book for engineers and designers. This book is pristine (meaning, no notes/annotations inside) and includes the discs that came with it. EXCEPT (see photos) the cover "hinge"" has split. The pages quality is commensurate with the overall age of the book. The book it totally unused/unread...I know this because I authored the book's sections on economic analysis and project management, and other than a quick look at how my work turned out, I have never read or used the book.