000 00270nam a2200109Ia 4500
100 _aDeshpande N D,
245 _aCommunication Electronics
260 _c1995
_bTATA McGRAW HILL
_aNew Delhi
300 _axvi+418
700 _aDeshpande D A
_a Rangok P K
942 _cBK
999 _c22950
_d22950