This book is unnecessarily verbose, incoherent, and nowhere close to what its title suggests.
This book is a collection of articles/chapters written by different authors. As a result of that, not only there is no connection and coherency among chapters but also topics covered in the seemingly related chapters are different and unrelated. The coherency and relationship among chapters are just limited to their names not what is inside them. For example, in "Part 5: Item and Industry Practice" there are separate chapters on "Raw Material", "MRO Materials", "Software and Intellectual Properties", "Capital Equipments" to name a few. I would imagine that each of these chapters will discuss purchasing process, nuances, and best practices for these items. But unfortuantely, all these chapters are independant and adderess totally different issues.
I guess, if you want to learn about purchasing, you would be better off searching on the web and reading different articles on purchasing then spending money on this book.