000 00285nam a2200121Ia 4500
008 230313s9999 xx 000 0 und d
100 _aTaub , Herbert
245 0 _aPrincipal of Communication Systems
260 _bT.M.H
_aN Delhi
_c2011
300 _a842
650 _aEC
942 _cBK
999 _c1351
_d1351