Uppal, S L .
Electrical wiring, estimating and costing / - 5 / - Delhi : Khanna publishers , 1997. - 836 ; .
*CSS
621.319 / UPP/EL
Electrical wiring, estimating and costing / - 5 / - Delhi : Khanna publishers , 1997. - 836 ; .
*CSS
621.319 / UPP/EL