000 00267nam a2200133Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aMurukesan. R
245 0 _aSound
250 _a1st Ed.
260 _bNull
300 _a137
650 _aPhysics
942 _cBK
999 _c33082
_d33082