00347nam a2200145Ia 4500008004100000020001800041041000800059082001600067100001300083245002600096260002200122300002800144365001600172700001300188230718s9999    xx            000 0 und d  a9780070707764  aeng  a621.38bRAO  aRao P.R.  aDigital Communication  c2014bMcGraw Hill  a577dRef 1586 E (49012)  cRs.b520.00  aRao P.R.