00305nam a2200121Ia 4500008004100000100001900041245004300060260003600103300000800139650001200147942000700159999001700166190216s9999||||xx |||||||||||||| ||und||  aJohn F Wakerly 0aDigital Design Principles And Practice  bPearson Education International  a895  aPhysics  cBK  c34182d34182