@book{13646,
	author = {Wooding, F. B. P. and Burton, Graham and ebrary, Inc.},
	title = {Comparative placentation},
	publisher = {Springer,},
	year = {c2008.},
	address = {Berlin :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10252353}
}