00277nam a2200121Ia 4500100001800000650002700018654001600045245002900061260003400090082001100124300000800135546001200143  aKumar/Sushil   aElectrical Engineering  aelectronics  aText book of electronics  bIndia Pub. HouseaDelhic1980  a621.38  a182  aENGLISH