00271nam a2200109Ia 4500008004100000041000800041082001800049100002200067245004600089260001900135365000700154230303s9999    xx            000 0 und d  aeng  a621.38159 WAK  aWAKERLY (JOHN E.)  aDigital Design : Principles and Practices  aDelhibPEARSON  cRS