000 00302nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aHerbert Taub
245 _aPrinciples of communication systems
260 _bDelhi:tata Mcgraw hill
_c2001
300 _a759p.
650 _aMangement
999 _c636
_d636