00399nam a2200145Ia 4500008004100000082001800041100001600059245003700075250000600112260003800118300000900156650003800165650003400203653001600237170901s1991    xx            000 0 und d  a621.381bG96E  aGupta, M.L. 0aElectronic and Radio Engineering  a1  aDelhibDhanpat Rai and Sonsc1991  a1343  aEngineering and allied operations  aTechnology (Applied sciences)  aElectronics