@book{176018,
	author = {Callihan, David. and ebrary, Inc.},
	title = {National Wildlife Refuge System},
	publisher = {Nova Science Publishers,},
	year = {2009.},
	series = {Novinka},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10671008}
}