00463nam a2200157 a 450000500170000000800410001702000150005804100080007308200120008110000270009324500630012025000120018326400690019530000150026470000260027920260717092124.0260717s2006    ii            000 0 eng d  a0074636820  aeng04a621.3821 aKennedy, George, 1937-10aElectronic Communication Systems /cKennedy, George, 1937-  a4th ed. 1aNew Delhi :bTata McGraw-Hill Publishing Company Limited,c2006.  axv, 763 p.1 aDavis, Bernard, 1938-