00315nam a2200121Ia 4500008004100000041001200041082001100053100001700064245007700081260000600158650000600164700002300170221030s9999    xx            000 0 und d  aEnglish  a105.23  aHerbert Taub 0aPrinciples of Communcations Systemscby Herbert Taub, Donald L. Shilling  c0  aB  aDonald L. Shilling