00297nam a2200109Ia 4500008004100000082002100041100003100062245002500093250001600118260004400134300000900178240913s9999||||xx |||||||||||||| ||und||  aGS    534  SUB/I  aN Subrahmanyan and Brijlal 2aA text book of sound  a2 nd rev ed  bVikas Publishing HouseaNew Delhic1974  a285p