00284nam a2200109Ia 4500008004100000041001200041082001100053100001800064245008000082260000600162650000600168221030s9999    xx            000 0 und d  aEnglish  a105.23  aJ. C. Hancock 3aAn Introduction to The Principles fo Communication Theorycby J. C. Hancock  c0  aB