00449nam a2200157Ia 4500008004100000020001800041082001700059100003000076245005100106250000800157260004200165300002300207500001900230600002700249650001500276240925s9999    xx            000 0 und d  a9789332547292  a621.3815 TRI  aTrishna, Knowledge System 0aGate electronics and communication engineering  a1st  aNew Delhi:bPearson Educationc,2015.  a659p.b0fOriginal  aIncludes Index  aElectronic Engineering  aTechnology