The Best
Joseph Duffy is a superb thinker and he is able to translate his life work of motor speech disorders (MSDs) in an easy to read (fun and interesting but not too wordy or personal), informative manner. This is the best book for MSD's.
Good
I received this textbook on time and it was in good condition. I recommend!
Fundamental Reading
This book is a cornerstone for any Speech Language Pathologist. All of the hospital placements that I am aware of have this book on the required readings list. It provides a good description and discussion of motor speech disorders and includes research findings. Beware; the text does get dry and tedious at times.
Best book for motor speech disorders.
Duffy presents a comprehensive and cogent overview of motor speech disorders using the 'Mayo' classification system. This book is intellectually satisfying and a scholarly work of the highest order. The revision only improves on the first edition. A classic.
a student's perspective
This book contains a lot of information for the beginning/intermediate learner of motor speech disorders. However, is not very easy to read. It can be dry and more wordy than need be.