000 00299nam a2200133Ia 4500
654 _aELN
100 _aGupta.S.
250 _a1st Ed.
245 _aElectronics Communications Systems
260 _bKhanna Publication
_c1980
082 _bGUP
_a621.38
300 _aXII, 796p.
999 _c32520
_d32520
041 _aeng
655 _aF-11
546 _aText in English
300 _c21 cm.