@book{6487,
	author = {Erlandson, Jon. and Rick, Torben C. and ebrary, Inc.},
	title = {A canyon through time},
	publisher = {University of Utah Press,},
	year = {c2008.},
	address = {Salt Lake City :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10274289}
}