00293nam a2200121Ia 4500008004100000041001200041082001100053100001100064245006600075260000600141650000600147700001800153221030s9999    xx            000 0 und d  aEnglish  a105.23  aJ. Das 0aPrinciples of digital Communicaitoncby J. Das, S. K. Mullick  c0  aB  aS. K. Mullick