00426nam a22001452  4500001001100000005001700011008004100028020002600069040001500095100002600110245006500136260002900201300001500230650003500245000000946720151217152055.0081029s         xx           000 0 eng d  a8123911467 :cKES 425  aKABUcKABU1 aGopal, R.@000016094210aProblems and solutions in communication systems /cR. Gopal.  aNew Delhi :bCBS,c2004.  av, 269  p. 0aTelecommunication.@0000156321