000 00297nam a2200121Ia 4500
008 220201s1998 xx 000 0 eng d
082 _a621.382
_bHAN
100 _aHancock, John C
245 0 _aPrinciple of communication theory
260 _bTataMcGraw Hill
_c1998
300 _a253
942 _2ddc
999 _c86722
_d86722