Audiology. The Science of Hearing. A Developing Professional Specialty. By Norton Canfield, M.D., Associate Professor of Otolaryngology, Yale University School of Medicine; Board of Directors, Audiology Foundation; Board of Directors, American Hearing Society; Vice-President, International Audiology Conference; Consultant in Audiology, Veterans Administration; Consultant in Otolaryngology, Office of the Surgeon General, Department of the Army, Washington, D. C. With Foreword by Gunnar Holmgren, Professor of Otolaryngology, Stockholm, Sweden. Publication No. 51, American Lecture Series. 44 pages with bibliography. Springfield, Ill.: Charles C. Thomas, Publishers, 1949. Price $1.75