000 00294nam a2200109Ia 4500
008 210616s9999 xx 000 0 und d
100 _aMarcelo S. Alencar
245 0 _aCommunication System
260 _c2007
650 _aEngineering and Allied Operations
_bElectrical Engineering
942 _cBK
999 _c5757
_d5757