000 00281nam a22001217a 4500
999 _c624
_d624
020 _a9780706998177
082 _a534.011
100 _aN Subrahmanyam & Brij Lal
245 _aA Textbook of Sound
260 _aNew Delhi
_bVikas Publishing house
_c2018
300 _a285
942 _cBK
_09