@book{137999,
	author = {Durr, P. A. and ebrary, Inc.},
	title = {GIS and spatial analysis in veterinary science},
	publisher = {CABI Pub.,},
	year = {c2004.},
	address = {Wallingford, Oxfordshire, UK ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10173514}
}