000 00284nam a2200109Ia 4500
008 220303s2011 xx 000 0 und d
041 _aeng
082 _a534 KUM/Pro
100 _aKumar, Raj
_9113919
245 _aProblems in waves and sound
260 _aNew Delhi
_bCampus books
_c2011
999 _c122212
_d122212