00414nam a2200133Ia 4500008004100000020000500041082001800046100001400064245009200078260005900170300000800229650001300237650003000250140316s9999    xx            000 0 und d  a  a621.3bGHO/EL  aGhosh,M L  aElectrical trade theory : electrical trade theory for wiremen, electricians and linemen  aThiruvananthapurambState institute of languagesc1993  a349  aEarthing  aPrinciples of electronics