000 00339nam a2200133Ia 4500
008 240913s9999||||xx |||||||||||||| ||und||
082 _aGS 621.382 KEN/E
100 _aBy George Kennedy
245 0 _aElectronic communication systems
250 _aNULL
260 _bTata McGraw Hill
_aNew Delhi
_c1991
300 _a763 p
942 _cBKS
999 _c6909
_d6909