@book{44986,
	author = {Perry, G. C. and ebrary, Inc. and Poultry Science Symposium},
	title = {Welfare of the laying hen},
	publisher = {CABI Pub.,},
	year = {c2004.},
	series = {Poultry science symposium series ;},
	address = {Wallingford :},
	note = {Proceedings of the World's Poultry Science Association Meeting held in Bristol, England, July 2003.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10073611}
}