00318nam a2200121Ia 4500008004100000100001700041245005700058260003600115300000900151650001200160942000700172999001700179190216s9999||||xx |||||||||||||| ||und||  aBemard Sklar 0aDigital Communications Fundamentals And Applications  bPearson Education International  a1103  aPhysics  cBK  c34195d34195