00353nam a2200133Ia 4500008004100000041000800041082001600049100001600065245005900081250000800140260003500148300000800183650002800191230711s9999||||xx |||||||||||||| ||und||  aENG  a621.3bHS-T  aHsu,Hiwei P 0aTheory and problem of analog and digital communication  a1st  c1993aNew DelhibSchaum Series  a328  aElectronics Engineering