000 00270nam a2200109Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aKHANNA(D.R.) & BEDI(R.S.)
245 0 _aTEXTBOOK OF SOUND
260 _bATMARAM & SONS DELHI
650 _aELECTRONIC
942 _2ddc
999 _c100402
_d100402