@book{149651,
	author = {Edgerton, William W. and ebrary, Inc.},
	title = {Recommended contract practices for underground construction},
	publisher = {Society for Mining, Metallurgy, and Exploration,},
	year = {c2008.},
	address = {Littleton, Colo. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10742722}
}