00297nam a2200097Ia 4500008004100000082001500041100000900056245007900065260004500144300001000189150201s2005    xx            000 0 und d  a621.3bUPS  aUPSC  aElectronics and telecommunication engineering Convertional Unsolved Papers  bNew Vishal PublicationsaNew Delhic2005  a152p.