@book{119349,
	author = {Hess, Earl J. and ebrary, Inc.},
	title = {Trench warfare under Grant & Lee},
	publisher = {University of North Carolina Press,},
	year = {c2007.},
	series = {Civil War America},
	address = {Chapel Hill :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10511435}
}