@book{227306,
	author = {Newton, Ian. and Gammie, Jim. and ebrary, Inc.},
	title = {Population ecology of raptors},
	publisher = {T & AD Poyser,},
	year = {1979.},
	address = {Berhamsted [England] :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10486600}
}