00271nam a2200109Ia 4500008004100000041001200041082001100053100002000064245006500084260000600149650000600155221030s9999    xx            000 0 und d  aEnglish  a105.23  aK. S. Shanmugam 0aDigital and Analog Communication Systemscby K. S. Shanmugam  c0  aB