@book{4143,
	author = {Das, Braja M.},
	title = {Shallow foundations :},
	publisher = {CRC Press,},
	year = {2009.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/1420070061/chopaconline-20}
}