00279nam a2200097Ia 4500008004100000082001600041100002300057245004600080264004500126300001000171200526s9999||||xx |||||||||||||| ||und||  a617.89  NOR  aNorthern, Jerry L. 0aSelected Readings in Impedance Audiometry  bAmerican Electromedics Corporationc1976  a389p.