00465nam a2200169Ia 4500 221231s9999 xx 000 0 und d 621.3 UPP Uppal S.L 7 etal 9538 Electrical Wring Estimating and Costing New Delhi Khanna Publishers 2003 839p Mechanical Engineering 9539 Electrical,Wring,Estimating,Costing,Mechanical 9540 BE_BK 5711 5711