This is a truly remarkable book which covers all the various theories of decompression and ascents for divers in a most readable and understanding manner. There is no other comprehensive book on decompression to my knowledge which is so easy to read and understand by the average recreational or technical diver. Peter B. Bennett, Ph.D., D.Sc. Executive Director, UHMS. Emeritus ... Read moreProfessor of Anesthesiology, Duke University Medical Center. Founder & 1st President, DAN This is the most comprehensive and well-written text I've seen that attempts to explain decompression theory to divers. Dr Richard Vann Assistant Research Professor in Anesthesiology, Safety Officer and Director of Applied Research at the Duke Hyperbaric Center, and Vice President for Research at DAN. This book is a "must read" for those who have ever wondered about decompression tables and how they are created. It is a straight forward book and devoid of technical jargon. It starts with the scientific giants who developed the physics of the gas laws and the physiology of diving and ends with M-values and tissue bubbles. For the curious diver - and all divers should be - it will be money well spent! Michael R. Powell, MS, PhD. NASA (retired), Medical Sciences Division, Johnson Space Center, Texas Show Less