00338nam a22001097a 4500020001500000082002000015100002000035245009900055260003100154300000900185650003400194  a0723609101  a618.920 978 TWE  aTweedie, Joyce   aChildren's hearing problems : btheir significance, detection, and management /cJoyce Tweedie  aBristol : bWright, c1987  a1987  aHearing disorders in children