@book{56619,
	author = {Burkart, Matthew J. and McCann, Michael},
	title = {Elevated work platforms and scaffolding :},
	publisher = {McGraw-Hill,},
	year = {2004},
	address = {New York :},
	url = {http://www.loc.gov/catdir/toc/mh041/2004271730.html}
}