Digiovanni, Jeffrey J Hearing aid handbook, 2011 Jeffrey J. DiGiovanni - Clifton Park, NY Delmar, Cengage Learning 2011 - x, 646 p.: illus.; 26 cm Includes bibliographical references and Index ISBN: 9781435481114 ISSN: 2009939027 Subjects--Topical Terms: Hearing aids Dewey Class. No.: 617.89 DIG