@book{205737,
	author = {Kozlowska-Dawidziuk, Anna. and Lenz, Alfred. and ebrary, Inc.},
	title = {Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada},
	publisher = {NRC Research Press,},
	year = {c2004.},
	address = {Ottawa :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10104109}
}