00445nam a22001097a 4500999001700000245013800017260005800155300001000213650001700223942000700240952008800247  c16269d16269  aIS 10776-4:1984-Methods of Measurement of Electro-acoustical Characteristics of Hearing Aids, Part 4: Hearing Aids with Bone Vibrator  aNew Delhi :bBureau of Indian Standards (BIS),c1984.  a14 p.  aHearing aids  cST  00104070aAIISHbAIISHd2020-06-23l0oST056r2020-06-23 00:00:00w2020-06-23yST