It's a great textbook for the course 'Organization Diagnosis'. It provides the necessary information, tactics, and tools to best complete an organizational diagnosis accurately.
Concise text which nicely combines theory and practice and provides guidance to applying 'diagnostic' processes in practice.
Clear, understandable writing that all levels of students could understand and use
I recommend Harrion's book on diagnosing organizations to all my master thesis students. It helps them to think more accurately on research within organizations.