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020 _a8174091602
040 _aUPES LIBRARY
_bEnglish
082 _a621.382
_bSAR
100 _aSarkar, N
_945229
245 _aelements of digital communication
260 _aNew Delhi:
_bKhanna,
_c2004
300 _a560p.
650 _aElectronics Engineering
_98870
942 _cBK