@book{2121,
	author = {Arora, S.P. and Bindra, S.P.},
	title = {A text book of building construction /},
	publisher = {Dhanpat Rai & Sons,},
	year = {1977.[Reprinted 1992,1990]},
	address = {New Delhi :},
	edition = {4th rev. ed.}
}