00480    a2200109   4500082001500000100002400015245018600039260008100225300002300306650001600329650002500345  a643.6bRAY  aRay, Sachchidananda  aExemplar instructional material for pre-vocational course under work experience on repair and maintenance of household electrical appliancesbinstructional - cum - practical manual   aNew DelhibNational council of educational research and trainingc1987g1987  ax,125p.billc17cm  aMaintenance  aHousehold equipments