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020 _a9788177585582
040 _aUPES LIBRARY
_bEnglish
082 _a621.382
_bROD
100 _aRoddy, Dennis
_945057
245 _aElectronics communications
250 _a4th ed.
260 _aNew Delhi:
_bPearson Education,
_c2009
300 _a723p.
650 _aElectronics Engineering
_98870
700 _aCoolen, John
_91669
942 _cBK