00462pam a2200145 a 4500020002000000041000800020082002100028100002500049245011300074250001200187260004400199300002800243653002300271700002200294  a9780198073802c  aeng  a621.382bLAT/DIN  aathi B. P.,eauthor.  aModern Digital and Analog Communication SystemsbDigital and Analog Communication SystemshTextual Documents  a4th ed.  aNew YorkbOxford University Pressc2010  axxi/903:bp.b.;c25*20.  aDig. Communication  aDing Z.,eauthor.