00416nam a22001457i 4500001001000000005001700010008004100027082002200068100002000090245004600110260004900156300001700205650003000222020001800252SXC02334720260819093733.0260101s1995    ii            000 0 eng d  a621.382 PRO-D222  aProakis, John G10aDigital communications /cProakis, John G  abMcGraw-Hill Book Co. Inc., New York,c1995  ap. ;c22 cm. 0aCommunication Engineering  a9780071138147