@book{352624,
	author = {Wilby, C. B.},
	title = {Concrete folded plate roofs /},
	publisher = {Arnold ;},
	year = {1998.},
	address = {London :},
	note = {Includes index .},
	url = {http://www.loc.gov/catdir/toc/els051/98128345.html}
}