000 00272nam a2200109Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
020 _a7608160
100 _aSri book world
245 0 _aElectronics communication (quistion paper)
260 _bLondon
300 _a431p.
_b0
999 _c136481
_d136481