00501nam a2200157Ia 4500008004100000020001800041022001500059040001300074082001500087100002600102245005900128260004600187300003000233500006300263650001700326191130s2008##################000#0#eng##  a9781418051983  a2008920754  aACLcACL  a617.89 DIG  aDigiovanni, Jeffrey J  aHearing aid handbook, 2008-2009cJeffery J. DiGiovanni  aNew YorkbDelmar, Cengage Learningcc2008  axi, 395 p. : ill. ; 23 cm  aIncludes bibliographical references (p. 382-386) and index  aHearing aids