000 00296nam a2200121Ia 4500
008 220201s1992 xx 000 0 eng d
082 _a621.381
_bGUP
100 _aGupta,Sanjeeva
245 0 _aElectronics communication
260 _adelhi
_bKhanna publisher
_c1992
300 _a796
942 _2ddc
999 _c33991
_d33991