I purchased this book to improve my understanding of pneumatics and found it to be excellent and well laid out. It covers pneumatic theory in sufficient detail without getting bogged down in the highly technical, and includes practical exercises for which I had enough components to undertake some of the most relevant ones.
Electro-pneumatics receives a little coverage but the reader would have to find another text for further detail in this area which is now accounts for a large area of industrial pneumatic usage.
Overall though I would recommend this book to novice and intermediate studiers of the subject.