This book takes a different approach to packaging development. It has decent amount of information that covers the packaging development process from concept to shelf. However, the book does focus more on packaging appearance or graphic, marketing aspect of packaging. Overall, I believe this is a book that is more suitable for management level rather than for packaging designers or engineers. The book doesn't offer enough details that packaging engineers or designers might be looking for.
If you are interested in knowing the whole process, this is definitely a good book to start up with.