@book{204714,
	author = {Martin, Paul S. and ebrary, Inc.},
	title = {Twilight of the mammoths},
	publisher = {University of California Press,},
	year = {c2005.},
	series = {Organisms and environments ;},
	address = {Berkeley :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10106462}
}