@book{2235,
	author = {Patil, B.S.},
	title = {Civil Engineering Contracts and Estimates /},
	publisher = {Orient Blackswan,},
	year = {2006.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/8173715599/chopaconline-20}
}