@book{542873,
	author = {Vazirani, V.N. and S.p.Chandola. revised by S.P. Deodhar.},
	title = {Civil engineering estimating  costing and  valuation},
	publisher = {Khanna Publishers. },
	year = {2010.},
	address = {Delhi. :},
	edition = {5th ed.}
}