000 00278nam a2200109Ia 4500
008 220120s9999||||xx |||||||||||||| ||und||
020 _a9781408334386
100 _aSri book world
245 0 _aElectronics communication (quistion paper)
260 _bLondon
300 _a333p.
_b0
999 _c136482
_d136482