00306nam a2200085Ia 4500008004100000082001500041245009500056264006100151300000800212200527s9999||||xx |||||||||||||| ||und||  a617.89 INT 0aMethod of Measurement of Characteristics of Hearing Aids With Induction Pick-up Coil Input  bBureau Control de la Commission Electrotechnique Ic1975  a9p.