00406cam a22001452  4500001001100000005001700011008004100028020002600069040001500095100002700110245003900137260002800176300001600204650004000220000000615920151217152013.0070920s         xx           000 0 eng d  a8174091609 :cKES 765  aKABUcKABU1 aSarkar, N.@000015755110aElements of digital communication.  aDelhi :bKhanna,c2003.  axiv, 544 p. 0aDigital communications.@0000157685