000 00285nam a2200121Ia 4500
008 220201s1984 xx 000 0 eng d
082 _a530
_bSHA
100 _aSharma,LP&Saxena,HC
245 0 _aOsillations waver & sound
260 _bS.chand&co.
_c1984
300 _a256
942 _2ddc
999 _c83213
_d83213