00349nam a22001097a 4500999001700000245004200017260005800059300001000117650001700127942000700144952008800151  c16265d16265  aIS 10775:1984-Body Level Hearing Aids  aNew Delhi :bBureau of Indian Standards (BIS),c1984.  a15 p.  aHearing aids  cST  00104070aAIISHbAIISHd2020-06-23l0pST052r2020-06-23 00:00:00w2020-06-23yST