@book{69302,
	author = {DUTTA B N},
	title = {ESTIMATING & COSTING IN CIVIL ENGINEERING: THEORY AND PRACTICE INCLUDING SPECFIFICATIONS AND VALUATION },
	publisher = {UBS PUBLISHERS DISTRIBUTORS PVT.LTD.},
	year = {2015},
	address = {NEW DELHI},
	edition = {27TH REVISED EDITION ed.}
}