000 00306nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a534
082 _bK527T
100 _aKhanna D R
245 2 _aA Text Book of Sound
260 _aNew Delhi
260 _bAtma Ram
260 _c1984
300 _a505
999 _c20729
_d20729