00338nam a2200109Ia 4500008004100000020001800041040002900059050002100088100001300109245007400122260003200196221221s9999    xx            000 0 und d  a0-07-310917-7  cChuka University Library  aHE 9723bS8 1967  aStein ,S 0aModern communacation principles with application to digital signaling  aMc graw hillbNewyorkc1967